eufy S1 Pro Omni Wi-Fi Connected Robot Vacuum & Mop with Self Washing and Self Drying Auto Empty Station - Black

We own two of these robotic cleaners and have been using them for about three months. While they have some useful cleaning features, there are a few significant drawbacks that make them less user-friendly than expected. One major issue is the high maintenance required. The robots need frequent cleaning, and the dirty water tray has to be washed about twice every three days, as it easily clogs with debris. This added upkeep feels counterproductive for a device that’s supposed to save time and effort. Another recurring problem is its inability to avoid wires reliably. Despite the manufacturer’s claims, the cleaner sometimes runs over cables and ends up tangled, making it challenging to leave the unit unattended. The app need a lot work. Additionally, the accessories for this unit are quite expensive, costing around $100 a month, which can add up quickly over time. In summary, while it performs decently when it's not tangled or clogged, the high maintenance, unreliable wire detection, and expensive accessories make it less practical than anticipated. It has potential with some adjustments, but as it stands, it’s hard to recommend fully.

Eufy has become known for making security products which have good value and solid technology. I was excited to see what they might do with a robotic vacuum. While the price is high, I was very impressed! There’s a few things this model does beyond Eufy’s “Ominicleaning” machine. Specifically, the mop offers a continuously cleaned mop roller and ozoneinated water which they say works as an antimicrobial agent. Performance wise, the mopping is outstanding. At the end of the cycle, there’s a reservoir of dirty water that’s pushed to the base. There was quite a bit of dirt collected in the water, even after I’d used a Swiffer on the same floor. The roller does a nice job of scrubbing the floor with enough pressure to pick up a couple of the stuck-on items from my kitchen floor. The floor not only looks clean, but also feels clean when I walk in bare feet. The mop roller covers nearly the full width of the robot, ensuring the rooms are cleaned quickly. The robot’s obstacle avoidance processing is also outstanding. In fact, it may be a little TOO good. The robot would not go between the legs of my kitchen or dining room chairs, even though there would be enough space. When I removed the chairs, it cleaned that area of the room well. It would be nice if I didn’t have to go through that effort each time, especially as I’d like to schedule daily cleanings. It similarly avoided some straps hanging from my fireplace hearth. It was funny to watch it do waves as it rolled passed my recliner with a puffy footrest. Never once did I see it bump into anything, regardless of where the obstacle was in its vision. The vacuum was the only slightly weak part of the whole set up. It certainly picks up surface dirt, but it’s not going to substitute for a full sized corded vacuum. The difference: You can set it and forget it. The robot will wake up every day, early if you like, set out from home with only one job in mind: Make today cleaner than yesterday. It does this well, like clockwork. It works quickly and efficiently. There’s no water break (except at the end) and no complaints about how it already cleaned one room! Eufy’s robot is at least as effective as a Roomba I have from a few years ago, but significantly faster and easier to use. Overall, this is one of the better robot vacuum cleaners on the market due to it’s hard floor cleaning ability and ease of use. It’s hard to justify the cost for carpets alone

Eufy has a new vacuum, the S1 Pro. The S1 Pro is not only a robot vacuum, it's also a mop. The combo vacuum/mop works well together. It is designed to basically be automatic. The only things I need to change periodically is a waste water bin and the clean water reservoir. It has a professional look and feel to the robot vacuum/mop and the base station. The base station is taller than the base stations of my other robot vacuums, but they don't also mop. Base Station The base station is a tower that has a space at the bottom for the robot vacuum/mop to sit in order to charge, fill with clean water, empty dirty water, empty it's dust bin, and dry the mop. The clean water reservoir and dirty water reservoir are both easy to get to. The dust/dirt from the robot vacuum empties into a bag that is accessible when you remove the clean water reservoir. It's designed to be easily accessible. With all of that, the base station essentially automates emptying and filling the robot so I don't have to do any of that. I only had to add clean water and empty the dirty water reservoir. It is hands free operation. There is a display on top of the base station so I can see the status of the base station operations. Emptying, filling, drying, and charging are all indicated on the screen during each of those and it has a progress indicator that shows up as well. I found that to be helpful as there were times when I was near the base station and wanted to check what part of the process it was on and the progress of that without have to pull out my phone to check the status via the app. The bast station also has three buttons next to the display. It has a home button, start button, and a mode button. I only used those buttons to make sure they were working, but typically, I started a job manually via the app until I setup schedules in the app. Regarding sound from the base station as it goes through all of those processes, it generates a low volume sound during each step in the processes to prepare for a job and also when it is done with a job. This I found to be a good thing as I was expecting the sound from it to be moderate, but it wasn't. I'm able to run the robot and have it go through the processes before and after vacuuming and or mopping at night if I wanted it to do that at night. Robot The robot vacuum/mop is only slightly larger in size compared to my other robot vacuums. This was surprising to me since the Eufy robot is not only a vacuum, but also a mop. It has a clean design and looks good. On the top of the robot are two buttons. One is the start/stop button and the other is the home button. The sound from the robot when running, is much lower than the sound from my other robot vacuums. This is a plus for me and I was very happy with that. The robot is good at covering each room and you can adjust settings in the app to suit your needs. It is very good at mapping out rooms and detecting obstacles. It was able to recognize shoes that were in the way and electrical cord as well. It placed an icon on the map in the app for each thing that was in it's way. I found that to be helpful since it did that when I had forgotten to pick up my shoes before a job and I didn't know an electrical cord would have been in it's way until it showed up on the map and I checked the location. The robot correctly detected my hardwood floors and carpet. This helps it to know when to use the mop and when not to during a job. It also helps when you want to setup zones based on the type of surface. The robot worked well on my hardwood floors and worked really good on my high pile carpet. It also did well with mopping, however, I will still need to use a mop as it didn't fully clean up a few spots where something had been spilled in my kitchen. I will use the mop feature in between the times that I use a mop. It was very helpful on the rest of my hardwood floors which was evident when I did use a mop and the mop water wasn't as dirty as it typically would be. The robot has two brushes on each side toward the front. They are used for moving debris next to base boards and other things towards the front of the robot to enable it to vacuum it up. The brushes rotate even when the robot is on carpet. During jobs that involve my carpet, which is high pile carpet, the robot would stop and state that there was an obstruction involving one of the brushes even though there wasn't anything in it's way. What was happening was that the brush's bristles would bend/fold up under the robot whenever the robot was making sever turns while on carpet. What I ended having to do when that happened was lift the front of the robot a little and unfold/straighten the bristles then lower it back down. After that it would continue to vacuum. This has been happening with each job that involves my carpet. If someone has low or medium pile carpet this likely wouldn't happen. Hopefully Eufy will address this with replacement brushes that have stiffer bristles or update the app/firmware to where I can set to the robot to not use those brushes on carpet and only use them on my hardwood floors. This has been the only problem I have had with the robot so far. App Eufy has developed a good app for the S1 Pro. There are a lot of settings you can set within the app. It's also where you can see the map, map/re-map your home, start jobs, select auto/room/zone type of job, set vacuum/mop or just vacuum for a job, manage maps, setup schedules, robot settings, carpet settings, robot voice settings, manual controls, update firmware, and use the Find My Robot feature. You can also watch the progress of the robot and see where it is on the map. Obstacles that are in its way, if it can identify them, it will place an icon on the map of the detected objects so you can see what was in its way and where the object is. It also tracks running time, charge, and square feet covered during a job. I can also see what part of the pre-job process or post job process the base station/robot is going through and the progress of each in the app. I like that Eufy has put a lot of time in development of the app and it shows. Final Thoughts I'm very happy with the S1 Pro. I whish it had been made sooner so I wouldn't have wasted money on my other robot vacuums. The vacuuming results from the S1 Pro is good enough to reduce the number of times I will use my upright vacuum each month. The mopping capability worked reasonably well such that when I use my regular mop the dirty was isn't nearly as dirty as it used to be. The robot's mop is helping to reduce the number of times I need to use my regular mop each month. The app features are far more than I would have expected. Eufy has made the S1 Pro to be hands free in it's use and it's easy to add water, empty dirty water, and change out the dust bag from the base station. The base station and the robot both are well made and look professionally made. Other than the problem with the edging brushes on my high pile carpet I have no complaints and only good things to say about the S1 Pro.

I got this Robot vacuum because I knew it was gonna be a huge upgrade. And boy was I wrong… it was a MEGA Upgrade. Like any other vacuum gets blown out of the water. Literally and thats just the software and vacuum part. Don’t get me started on the mopping. First things first unboxing experience testing is massive, but the footprint is about the same as any other vacuum. That tower is a huge tower and looks super futuristic. You definitely know this is quality just by looking at it. It has a very slick gray finish. This is the first time I’ve ever seen a robot vacuum have a lcd screen on the home tower to show you what to do. Once you do the initial settings. It takes off and does a mapping over the house and it’s upper cool seeing the radar pick up the room and running around. This thing is super nice. I have a lot of tile and hardwood in my house. I also have a dog. So this thing is a life saver. It’s has a ton of great features that make this vacuum leagues above anything else over ever owned. And I’ve owned self emptying vacuums and also mop vacuums. The tracking and obstacle detection is pretty good. I have sometimes left something on the ground and I can see on the map that it avoids it and goes around. The vacuum feature is great. And the real star of the show is mopping feature. It has a roller that instead of dragging a pad around the whole floor. This devices roller spins and scrubs the floor and actually cleans itself each rotation allowing to truly clean the floor. My floors have never been cleaner. The roller also pulls up into the device to make sure your carpets don’t get wet. The tower has a spot for cleaning solution and even has an ozone water sanitizer. To ensure the floor is clean and sanitized. Once you have it all set up you it will auto divide the rooms it detects. Then you can schedule it to clean certain rooms and certain times during the week. You can also have it do deeper cleaning or less depending on your preference. So if you need it to just vacuum, or you want it to lightly mop you can. Or you can go maximum suction and deep mopping with a double pass for a super clean clean. I love the vacuum and makes me wonder how I did it before. It so nice the have a robot vacuum that does everything and it does it great.

Well, if you want a five plus stars cleaning robot, lets talk the eufy S1 Pro Omni Wi-Fi Connected Robot Vacuum & Mop platform. This is a marvel of engineering, with self-cleaning paint roller like floor cleaning component that cuts a swath of floor almost a foot wide after every cleaning pass. First lets talk about setup, the unit is sizeable and was not easy to pull out of the box. The robot is packaged in its own separate box, with base station and associated tanks packaged as a nearly assembled unit. I pulled the top the protective plastic bag to coax the base station assembly out of the box. Of course, the unit setup and operation require use of a mobile app, I used the iOS variety. The app has a pleasant and rich interface and guides you through the setup once assembled. Assembly consisted of filling the clean water reservoir, taking a few spacers out of the robot, plugging in the base station, installing the eufy cleaning solution in the base station and docking the robot. After connecting to my Wi-Fi the setup was pretty seamless and as usual evolving functionality requires new software, thus a firmware update was applied. So let me tell you about my initial use case, we recently moved to a new house and are selling the existing home which had mostly laminate floors. We repainted the home and cleaned up fairly well, however some of the spackle dust was embedded on the floor. The eufy S1 Pro was up to the task, although in fairness I took advantage of the max suction, deep and times two cleaning features. Normal maintenance would require less aggressive settings and presumably save time and consumables. After mapping my room (rather quick I thought, as most robots have to traverse the entire floor) I set upon a cleaning. Reviewing the map the robot generated evidently utilized its camera and LIDAR to “see” into sections it did not travel to, frankly amazing. Even more mind blowing was after mapping and closing the door to a room it mapped, it marked the whole room in red on the map to indicate it was not able to access the room. I let the robot do its thing and left some of the lights on in the house so it could run, not realizing this robot can essentially see in the dark by using the LIDAR. So, you do not have to keep the area lit to ensure the robot sees everything. The robot went through several maintenance dockings to the base station to recharge battery, empty dirty water, get more cleaning fluid and after the second phase of the run, perform a clean and dry the roller cycle while docked to the base station. An automated cleaning and drying cycle for the cleaning roller is huge, as other pad-based robot moppers (which really only spread the dirt around) turn into a mold smellothon. In any case the robot covered over 1840 square feet which essentially how much laminate flooring I have (920sq feet) times the two cleaning cycles it performed (earlier I mentioned I had the robot to clean two times in this first cycle). While I left the house, I occasionally checked one of my security camera to watch the progress of the robot. The next day I was amazed on the excellent results, the floor was spotless (and don’t tell my wife) looked better than any time I remember. I then went a refilled the clean water reservoir and emptied the dirty water tank, which looked like grey milk with some dirt/sand particles. I rinsed it out thoroughly and put it back into the base station. Overall, the eufy S1 Pro Omni Wi-Fi Connected Robot Vacuum & Mop platform is one of the best mopping robots I have used. Some caveats to this review, I really did not use the vacuum function or had a lot of obstacles to challenge it guidance system. Nor did I assess how quickly the robot uses consumables. eufy includes one tank of cleaning solution, a spare cleaning roller, another pair of brushes and a cleaning tool. >>> Pros: >> first rate cleaning capabilities >> amazing example of cleaning platform engineering >> mobile app is first rate >> top display panel and overall aesthetics of the device, looks like it could be used as a miniature model for a sci-fi series. <<< Cons: << large << not inexpensive << complicated piece of engineering which asks the question, how reliable will it be long term ?

I've been interested in robot vacuums with mopping capabilities for a while, but I've hesitated to buy one due to mixed reviews. Recently, I finally bit down and aquired the eufy S1 Pro robot vacuum, which takes a unique approach to mopping. Instead of using mopping pads that can trap dirt, the S1 Pro has a rolling mopping brush that continually dispenses water to pick up dirt and deposit it into a separate dirty water tank. The S1 Pro does an impressive job as a mop, effectively cleaning stains that other robot vacuums struggle with. It also performs decently as a vacuum, although it has some difficulties with edges. If you'd like to read my full review of the eufy S1 Pro robot vacuum below. ------------------------------------------------------------ Shipping and Packaging After receiving the delivery, I noticed that the package was quite heavy, weighing around 41lbs including the box. I thought it was unusual for just a robot and a station. Upon opening it, I found a comprehensive getting started guide that was very easy to understand. There was also some more documentation in a separate package, all securely packed to prevent any damage during transit. eufy did an excellent job with the packaging and the provided documentation. Everything inside was wrapped nicely, and the robot was packed securely in another box, along with all the necessary accessories. It even included extra side brushes, a rolling mop, a high-performance filter, and a dust bag. eufy makes sure you're well-equipped with backup accessories! -------------------------------------------------------- Docking Station Design & Build Quality The S1 Pro robot vacuum operates mostly autonomously in day-to-day use, thanks to its convenient self-emptying and self-cleaning docking station. The docking station features a clear 3-liter water tank, making it easy to see when refilling is needed. It also houses the ozone creation process that sterilizes the tank, ensuring the water on-board the vacuum is more hygienic when carrying out its mopping duties. Additionally, the docking station can automatically mix detergent into the water tank using 600ml bottles of eufy’s own Hard Floor Cleaner. Dirty water is removed from the vacuum cleaner at the base of the station after roller cleaning and collected in a 2-liter tank at the rear of the station. It's important to clean this tank to prevent any unwanted smells. The docking station also dries the roller with hot air and rotates it to ensure thorough drying. A spare roller is included, which is very handy, allowing you to clean one while using the other. Dust is collected from the vacuum cleaner into a 2.5-liter bag on the station, which eufy claims can hold up to two months' worth of dirt. The vacuum itself has a small bin with a filter that can be cleaned if clogged. An LCD screen on top of the docking station provides maintenance alerts and instructions, making upkeep straightforward. Shortcut buttons on the robot and docking station allow for starting and stopping cleaning without needing the app if you’re stuck and need to send the robot back to the station but don’t have your phone on you. --------------------------------------------------------- Robot Vacuum Design & Build Quality The eufy S1 Pro sets itself apart with a mopping roller. This roller covers almost the entire width of the robot, providing thorough floor contact and a wide cleaning path. As the roller turns, it picks up dirt, which is then deposited into the robot’s reservoir. This allows the S1 Pro to mop for extended periods without requiring the roller to be cleaned, preventing dirt from being spread across the floor. However, some maintenance will be necessary: the dirty water tank should be removed and rinsed weekly, and the debris tray should also be cleaned regularly. Nonetheless, the S1 Pro is relatively low-maintenance. Its floor brush is designed to prevent tangling with hair, with most of the hair collecting at the end of the roller for easy removal. The eufy S1 Pro’s 3D Matrix Eye system utilizes a camera, sensors, and AI to navigate and avoid obstacles such as shoes and cables. It skillfully maneuvers around objects like potted plants while staying close to ensure a thorough cleaning. Although it's helpful to move some items for a deep clean, the S1 Pro generally operates without much need for intervention. ------------------------------------------------------- Vacuuming Performance The S1 Pro has 8,000pa suction power, which is one of the highest in its class. It adjusts suction power automatically on carpets, effectively removing dirt and debris from both hard floors and carpets. It comes with dual side brushes to clean edges, although corners may still need manual attention. ------------------------------------------------------ Mopping Performance I don't have any previous experience with robot vacuums, but the S1 Pro did an excellent job. It efficiently removed various stains such as black coffee, strawberry jam, and clay from potted plants placed around our hard floor surface. The roller remained clean throughout the cleaning session, ensuring consistent performance. The S1 Pro eliminates the need for a traditional hard floor cleaner. It handled spills and tougher, dried-on stains quite well. However, the roller doesn't extend fully to the edges, so you may need to do some manual cleaning with a cloth in those harder-to-reach places. The 12mm clearance of the roller prevented wetting most short-pile carpets and rugs, which is a feature that also worked effectively. ---------------------------------------------------------------------- eufy Clean App Functionality and Voice Assistants The eufy Clean app is available on both Android and iOS and is very user-friendly. When setting up the S1 Pro for the first time, a quick mapping run is needed, and the LiDAR system automatically generates a map. You can split, merge, and name rooms for convenience. The app supports virtual boundaries, no-go zones, and no-mop zones, which are useful for protecting delicate flooring or low furniture. You can control cleaning from the app, selecting specific rooms or zones and adjusting settings for vacuuming, mopping, suction power, and water usage. Voice commands via Alexa and Google Assistant allow you to start, stop, and dock the robot, which is surprisingly convenient. ---------------------------------------------------------- Battery Life & Maintenance The 4600mAh battery provides up to 170 minutes of runtime in standard mode. Even at higher settings, it covers a large area. The robot can return to the dock to recharge mid-clean if necessary and will go back to where it left off once it gets back to 65% charge, which is very clever. As mentioned previously, regular maintenance for both the vacuum and docking station includes weekly rinsing of the debris tray and dirty water tank. The docking station’s debris tray should also be rinsed to prevent clogs, though the robot will alert you if this happens. Monthly maintenance also includes wiping the robot’s sensors and checking the brushes but, thankfully, the eufy Clean app provides reminders for these tasks. --------------------------------------------------------------------- Conclusion Is the eufy S1 Pro worth your investment? If deep mopping of large hard floor areas is your priority, the S1 Pro is an excellent choice. Its roller and dirt removal system are highly effective on deep stains, and its self-cleaning capability during mopping sessions is impressive. However, if you need a combination of vacuuming, mopping, and edge performance, there may be better options available. ---------------------------------------------------------------------- Pros & Cons: Pros: - Excellent Packaging and easy to understand getting started guide - First time use mapping does a excellent job - Vacuuming has some powerful suction - Mopping is excellent, lives up to its hype - The vacuum can maneuver around corners of table legs, shoes, socks, cords, you name it and it gets within 1 inch for a precision clean around the obstacle which is amazing. - In my usage, It can vacuum/mop for over a hour on a 100% battery and be finished with still 30 to 40% left in a 1,200 sq ft home with multiple rooms. Pretty impressive for having the ability to vacuum and mop! Cons: - If using the highest setting for suction during vacuuming, it is loud but expected and normal just like a normal vacuum cleaner. - When it returns to base and its emptying the dust bin, it is way louder then the robot vacuuming the floor and can last for up to 30 seconds or so until it finally turns off. - Drying the roller mop can last up to a hour or more after using the the mopping function. - Price may seem steep for some but so far, being my first ever eufy product, I say its definitely worth it!

The Eufy S1 Pro is truly the Cadillac of the robot vacuum world. I've been testing it out for about a week now and I love this thing. Setup was super simple comes with a super informative setup sheet and the app was easy to use. The design of the base and robot itself is very sleek and clean. It comes with a big water tank that is easily refillable and also comes with detergent that automictically gets mixed into the water before going off to mop. Watching it mop is super cool as it can easily detect carpet and automatically lifts the mophead to avoid getting anything but hardwood wet. Once done, it dumps out the dirty water back into the base which is super convenient. The power of the suction can be super strong and is adjusted through the app, I believe it can go up to 8.000 Pa and it certainly sounds like it at max power. The object avoidance system works amazingly this thing moves and cleans in very smart smooth movements unlike older robot vacuums that bump into things to detect objects. The app is great for me but the base also has a LED screen on it that can be used to control the robot as well. Overall, this thing is a beast. If you want a robot vacuum that can do it all and allows you to completely forget about cleaning, this one is definitely for you.

I bought this thinking this was the solution for my floor vacuuming and mopping problem. And while it was pretty amazing the first day, the second day was the complete opposite. I’ve been working with Eufy’s customer relations team for almost 2 weeks and have not given me a solution to the problem. Id just rather return this product and not have to deal with them. Every time the gave options, they would find a reason to slow down the return or exchange. Had my floors been wood, this unit would have ruin them. Basically, a gallon of water soaking on the floor. It’s been a nightmare pirchase for me. Deserves a zero star rating.

The S1 Pro has a great design first it is a little smaller than other most allowing it to get into places that other robot vacuums have trouble with. The lidar system which is front mounted to reduce the overall height of the robot and works very well to map and guide the robot through your rooms. The 3D Matrix camera system works with the 220 degree lidar to give the best navigation and object avoidance that I have ever seen in a robot vacuum. In addition to the excellent vacuum it has a great mopping system which is a roller style self-cleaning mop. The S1 Pro has a hefty 4600 milliamp battery that lets it run 184 minutes in Quiet mode, 136 minutes in Standard mode, 128 minutes in Turbo mode, and 102 minutes in Max mode before recharge according to Eufy. The robot was able to mop and vacuum my 2000 sqft space in turbo mode without recharging or returning to the base to empty. The robot design is ingenious and functional. The lid is held on with magnets which hold it well but make it easy to remove, no clips or clamps to break. You remove it to get to the dust bin,open it to access the mesh pre-filter and a paper washable E11 rated filter to keep all the dirt in and allow clean air to be exhausted out. The Wi-Fi reset button and on/off power are also located here. Just for good measure there are several QR code links to download the Eufy clean app, a support contact number, videos and some instructions on the lid and top of the vacuum. The vacuum has two modes vacuum only and Vacuum + mop. The vacuum can auto detect carpet and raise the mop head or keep it down for mopable surfaces. You can set schedules by room or the entire mapped area. Vacuum strength, mode days and times can be set. This allows a very customizable schedule. The 3D Matrix object avoidance system that consists of a camera and structured light sensors along with the front 220° lidar for navigating and mapping your house the entire shiny black front cover acts as a bumper. This combination preforms flawlessly in my space, the robot navigate without bumping anything, was able to go over all cords and transition from hard tile to carpet without getting stuck. The mapping is done on the first run and it’s fast as well as accurate. The side mounted wall sensors keep it close to walls without hitting. The two side spinning brushes compensate for this. Eufy has set the distance a little further than I like but as the firmware is tweaked they should be able to get it a little closer. There is an all rubber roller brush that ensures a good vacuum is achieved. With the adjustable vacuum levels and allowing 1 or 2 passes in the settings you can get just the right vacuum to clean all your surfaces. If you want to know moping is active there is a light on the left which comes on when the mop is down. The robot holds 240 ml (about ½ pint) of clean water for mopping. It will refill if nessesary for big areas. The mop roller is easy to remove it is released by pushing a button on the left side of the roller; you lift it and then slide it off the axle. You will probably only do this when it needs to be replaced. The roller is auto cleaning while mopping and when it returns to the dock a full cleaning and drying with hot air is done. The mop with the included detergent was able to clean my floor well removing dirt even though the floor had been mopped regularly evidenced by the dirty water in the pickup tank! There is a removable mesh screen filter which will needs to be cleaned every so often. And the 220ml (a little less than ½ pint) dirty water tank can be removed an rinsed if nessary. Eufy includes a cleaning brush to clean the mesh filter. The Dock is looks great and works well. It houses the 3 liter clean water tank uniquely there is an ozone generating device which electrolyzes the tap water to produce ozone. The ozonated water helps sterilize the floor and the mop roller. There is a fill port on the left hand side instead of a removable top, I like this less parts to loose and you are less likely for water to spill out when carrying the tank. Under the water tank you is a door that houses the 2.5 L dust bag. Dirty water that is removed from the robot is pumped into the 2 L dirty water tank on the back of the dock. This reservoir has a lid that opens for the ease of cleaning. The S1 Pro comes with a 600ml detergent pack that is a consumable that is sold by Eufy. The detergent is used for cleaning the mop roller and injected into water filling the mop reservoir of the robot. This mixing is all automatic and takes the guesswork out of premixing detergent. The dock is equipped with a small color CD screen that shows the charging percentage along with the current status of the robot. There are three control buttons a home button a start/stop/pause button and a function button that allows you to switch easily between vacuum only or vacuum and mop mode. You can also press it for 3 seconds to start a mop wash and dry cycle (quick 3hr regular 4.5hr). The drain plate is removable for easy cleaning water drains from the dirty water tank through this tray down into the base where is sucked up into the dirty water tank. Hot air for drying the mop is directed from below. Eufy includes a few extras in the box: a spare paper filter, 2 Brushes and another 2.5 L dust bag. With these features the Eufy S1 pro is an excellent robot moping and vacuum device. It is fast and does an excellent job of cleaning all my flooring. This is the best cleaning robot mop and vacuum I have ever owned and is well worth the cost.