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Description
dsma selective herbicide David Grays Crab Grass and Clover Killer Herbicide - DSMA MCPADAVID GRAYS Crab Grass & Clover Killer is a high powered selective lawn weed killer, able to select and kill just the weeds in your Couch, Bent and Fescue lawns. Higher powered selective herbicide, therefore will knock down harder to kill weeds. Spot Spray treatment only on Buffalo and Kikuyu Lawns, Some damage to these lawns should be expected. Always to be used as per the label instructions. Application Cover Spray Application Rate 85 170mL in 2L of
DAVID GRAYS Crab Grass & Clover Killer is a high powered selective lawn weed killer, able to select and kill just the weeds in your Couch, Bent and Fescue lawns.
Higher powered selective herbicide, therefore will knock down harder-to-kill weeds.
Spot Spray treatment only on Buffalo and Kikuyu Lawns, Some damage to these lawns should be expected.
Always to be used as per the label instructions.
Application
Cover Spray Application Rate - 85-170mL in 2L of water per 10sqm
Spot Spray Application Rate - 45-90mL in 1L of water
Use this product with Wetter 600 for mor effective results
*DO NOT COVER SPRAY on Buffalo and Kikuyu lawns - Spot spray only.
Crabgrass & Clover Killer is best applied with a backpack or handheld sprayer to ensure even application. Sprayer calibration is recommended.
Active Ingredients
| DSMA | 74g/L |
| MCPA | 24g/L |
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4.7 ★★★★★
Based on 131 reviews
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Product Reviews
★★★★★ 5
Highest Recommendation
Color: Black01
I own three of these. One was used at my former home; the other 2 were purchased for my 3 level new home (basement, 1st flr, 2nd flr).
"Are you crazy? Are you made of money? What a waste. You're lazy!"
It could be that all of those are true. It could be that none of them are. I believe that none of them are. I work A LOT. And while I am infatuated with the ease of mopping with those manual "tornado" spin mops, I am also an automation freak.
The older version (which is close to identical and uses the same parts -- which I still own and use) impressed me quite a bit as far as cleaning, vacuuming, mopping. It impressed me enough that when the other two went on sale, I purchased additional ones for this probably too large house. Total spend is probably $1,600 for all three over the course of 2-3 years. I also bought knock off replacement parts (filters, bags, mop heads) and they work great.
Here's what you do to have a good experience: I don't run them on a schedule. I manually run them. This forces me to walk the house to make sure there are no dog accidents or unnecessary debris on the floor. My robots have never encountered dog urine or dog poop so I can't really say whether this device would identify and handle it. I think I would like to avoid testing out it's avoidance abilities in that regard. But, I do want to get rid of anything laying on the floor so dog beds go up on the couch, scale gets picked up and stuff like that. If you are going to vacuum and mop, try to vacuum and mop everything. Phone charging cords and the most likely culprit for getting tangled.
Once I walk the house and see that there's an unobstructed path and everything has been picked up, then I run a cleaning cycle. You could choose a full cycle or just some areas or just some rooms. Useful if you work from home and do not want a robot in there. Works great. You can also define "No Go" zones on a map. Works great.
(My gf has those really long pile area rugs that are like fake animal fur -- like the pile is wispy and 3" long -- and these do not play well with those rugs -- they get stuck every time. No Go allows us to clean everything and the robot avoids the rugs perfectly.)
The bottom line is that you are the one with the brain, not the robot. Put the robot in a position to help you. Make the robot's job easy and you will be very happy. If you have pets or kids, DO NOT run it on a schedule Walk the house first.
1. Walk the area and pick up.
2. Check waste and water tanks and garbage bag and dump/fill if necessary;
3. Run it.
4. Dump/refill tanks so its ready to go the next time.
I will often run basement, first floor and second floor at the same time. The layouts are complicated, but the robots have no problem. It rarely gets stuck. Occasionally, a magnetic mop pad will come loose, which is an easy fix. For the most part, these things run very quietly and they do a fantastic job.
My basement is all tile and my workout room has thick rubber mats. The robot goes up and cleans the mats and cleans everything else very well.
My first floor is wood floors plus tile and includes a laundry room a bathroom, kitchen, etc. Because the floor tile is that 'rough stone' texture, it does make a clicky clack sound, but it also does a very nice job of mopping and vacuuming. We have a couple of low pile rugs and there's never a problem with them or anything else on the first floor. The area and room features are usefull to vac and mop the kitchen area after food prep.
The second floor has bedrooms with really old carpet and the rest is tile or wood floors. The vacuum picks up an unbelievable amount of legacy (before I bought the house) hair and dust out of those carpets. I mean, literally an unbelievable amount. Every time it runs, I will sometimes have to manually clean out the bin because of the volume of the hair. After the fifth or sixth cleaning, this is no longer an issue, but it still is pulling up so much legacy dog hair and dust. Quite impressive power.
I run these weekly or in addition as needed with a small amount (table spoon or two or three) of liquid cleaner like Mr. Clean or Lysol and that seems to work very well. I'd avoid putting in a lot because you do not want internal parts to get 'gummy' or clogged.
Overall, these are some of the best technology I've ever purchased. My oldest is maybe 3 years old and still runs perfectly. I look forward to using these for a long, long time. They save me probably 3+ hours per week.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
As my initial review, it's a worthy robotic vacuum
As a rule, I do not write reviews based on a few days of use. I’d give it a month or more, observing how it performs. However, in the case of Roborock, I decided to make an exception, I was, quite frankly, a bit impressed by its performance.
Hence, the following is my initial report about S7 MaxV robotic vacuum.
At first, for many years, I owned Roomba and, since years ago it was the only well-known robotic vacuum, I was happy having such a toy. I did not make a reservation, calling my Roomba a toy, despite paying for it over $900, I did not see much use and enjoyed the first “robot” in my house. I was working on a third floor and heard Roomba vacuuming on a first, often bailing it out when it stuck under kitchen cabinets or some other obstacles.
Years passed, and a month ago, I purchased Eufy G40+ (with a cleaning station) to see if 15 years of robot vacuum development made a leap. Well, if to judge by G40 (~$400), it was far from a leap, more of a stumble. But the reviews, and the price, were good. But a few weeks later, I couldn’t take it anymore, watching as the unit would “stuck” in a totally unobscured area, lifting it, placing it nearby, and watching as it would take about six minutes to cover less than 3-5 feet to get back to its charging station (video is available)
I decided to replace Eufy with Roborock and got two units; a Roborock S7 MaxV ($640) and an automatic vacuum station ($300). Since I ordered them separately, the station came a day later, and, for a day, I used S7 as is with its standard dust bin.
Again, time will pass, and I’ll amend my review, giving a more comprehensive statement. But initially, comparing S7 to Roomba and Eufy G40, I was pleasantly surprised. It works just as one would imagine a vacuum robot must perform.
First of all, it’s quick.
It took just one run to map the first floor very accurately.
It’s doubtless.
S7’s cameras, lidar, and all its sensors guide the unit with bewildering precision. Especially on the second run, I was utterly enjoying watching how it was "hugging" every corner, chair legs, cat dishes, electric candles (my wife placed them on the floor), and so on. It seemed that the robot built my house and was very familiar with the floor plan since it was born. I was also impressed that I did not see yet S7 bumping into any obstacle, it slows down and stops, leaving less than a few millimeters between its front pannel and any barrier.
Dust collection.
That is a bit funny. My wife does everything very diligently. She vacuumed the first floor a day before S7 arrived and was a bit surprised when S7 collected almost a full dust bit on its first run. The next day, we used it again, and when I sent her a picture of collected dust (albeit not as much as on the first day), she replied that in her opinion, S7 had some dust hidden inside its body and now it was just showing off. Well, not only it did a great job, but it also was very quiet, considering that we are talking about a vacuum.
The application.
It is ok. A bit buggy, but useful and comprehensive. You can create and name rooms, make no-go zones, and so on. I’m sure the company will continue improving its functionality. But my general complaint/wish is to see the application designers stop using almost the same colors for font and backgrounds. It is so difficult to read and understand anything if texts are written in a small font and the color (of the text) blends with the backgrounds. I wonder who was the first “genius” who decided to implement such a “clever” trick. How must a person with dilapidating eyesight abilities use such apps?
Thus, as a conclusion to my initial impression - S7 MaxV is worth every penny and an automatic dust evacuation unit only adds great value to an already very capable machine.
To be continued.
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Reviewed in the United States on January 21, 2023
★★★★★ 5
A phenomenol piece of tech... outclasses any and all other vacs I have ever owned...
Color: Black01
This was almost a revenge purchase in response to a frustrating year we had after moving on to a Eufy which was a complete dud. the Eufy, while advanced and not low end, managed to barely finish 40% of the cleaning jobs without getting stuck on something. Prior to this, I've had Roomba 200 series and Neato vacs which I had been very happy with, but those weren't very advanced.
In comes the Roborock Qrevo... this thing was the answer to our prayers. Its *quiet*, powerful, and most importantly, it FINISHES THE JOB. While its not perfect, the Roborock can finish cleaning the house around 80-90% of the time without help. Its base operates just fine, and the mapping system is the best I've seen. With the Eufy, the map seemed to mean nothing... if the robot got stuck, you cleaned it, and placed it back down a little further away from where it was it would get lost. The Roborock on the other hand does an amazing job at map registration, even with significant moves of the robot for any reason (including our toddler picking it up and dropping it elsewhere). Also, in praise of the mapping system, it does an amazing job capturing various levels of detail such as the location of rugs (relative to the hard wood floor) and other aspects of the home.
The app is also very nicely done, as is the power management. This thing is really designed as a >$800 robot vacuum, that you can get on sale for $400.
My recommendation is to BUY IT.
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Reviewed in the United States on April 8, 2026
★★★★★ 4
Impressive Cleaning, but not quite perfect
UPDATE BELOW INITIAL REVIEW
This is an impression after having run 6 sessions total over the span of two days on a 3 story home, two days after product release.
I want to get something out of the way first: I have never owned a robovac; I have friends that have and I have witnessed them in action, but not my own. I recently moved into a big home with my SO and we quickly realized we would need some serious cleaning assistance. I set off in search of a good robovac, scouring the internet for hours over a week. Everything pointed to this vacuum.
I read some pretty unbelievable reviews, and let me tell you they're not entirely accurate from my experience, but pretty darn close.
Upon setting up my S7 MaxV I was immediately greeted with a firmware update, which went without a hitch and provided a changelog. Good sign, as this means that we should be able to expect OTA improvement over time. I have very long hair, we have no pets, but we leave a lot of things around the house and there are a lot of potential things to hit and get stuck on such as standing fans, chairs, tables, electronics, metal floor vents, etc for the vac to interact with on every floor. Everything this vacuum promises lives up to expectations, but there are a few caveats. It will get hung up on some things, still, such as metal floor heater grates and long Ethernet (any really) cables stretched across the floor, and it is definitely not immune to the amazing power of long hair and it's evil tangling powers. That said, it is surprising easy to remove long hair from both the side and middle brushes, albeit I did have to carefully cut the hair on the middle brush to get most of it off.
As to cleaning, it's incredible on all surfaces. You can really hear the power of the vacuum roar to life on carpet, where it auto switches to higher suction when moving off another surface. Not much to say here other than things were spotless after it mopped and vacuumed about 66sq meters in 1hr, including underneath large objects. Way better than me!
Obstacle avoidance is almost flawless, I didn't really need to monitor this at all. Additionally, it detected stairs very well.
The video camera and call functions are pretty neat, but don't expect too much out of them as it's mostly a gimmick. Fun though!
There's just so much to say but I will cut to the chase: this robovac is freaking incredible. I am extremely satisfied with my purchase, and am excited for the ultra dock that supposedly comes out next month. If you are on the fence, this robovac is well worth it! That said, it is extremely expensive but if you can shell it out you will likely be satisfied, too!
---UPDATE AS OF May 12 2022:
The robovac is working as great as ever for it's main purpose--cleaning. Maintenance has been am absolute breeze; after three to six runs you empty the dustbin and after every mop you clean it. As mentioned above, I have long hair so I occasionally need to take out the main and side brushes, but cleaning these takes about 2 minutes. Refilling the water tank with distilled water takes about 10 seconds. I've noticed that a few features don't work properly, even with perfect signal (wifi or cell), such as the calling and remote viewing features. It's simply will not display the video no matter what I do. At one point I was able to get it to work by cycling my Wi-Fi and cellular a bunch of times and eventually it showed. I have not tested this on iOS, but at least on Android it does not work properly. Additionally the vacuum has managed to lose its main brush on a metal floor transition strip. My theory is that it got caught on the nails holding the strip. Honestly this was a pretty minor inconvenience. I still think this robot vacuum deserves four stars, however there are a few things I would really like to have:
1. An undo button on the map, as well as an option to manually erase parts of mapped areas (think like the eraser tool in your favorite image editor). As someone that has quite a few full sliding door mirrors, the robot vacuum loves to see "into them" and see those "inside mirror parts as part of the room. This has led it to bleed into other rooms which has led me to have to remap. Minor inconvenience as it's fixable by putting down things to block the robots view of the mirror but rather annoying.
2. An option to disable the mop without removing it. While I generally like it to mop, sometimes I just don't need it for what I needed to do.
Overall great product, would buy more from Roborock.
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Reviewed in the United States on April 11, 2022
★★★★★ 5
Excellent Choice In A Reasonably Priced Robot Floor Cleaner
Color: Black01, Color: Black01
This review is for the Roborock QV3a. After hearing my brother-in-law rave about his robot vacuum, I hesitantly bought this. I was hesitant because I had purchased one many years before, and it had been virtually useless. It only vacuumed, was loud with minimal suction, banging its way around and it constantly got clogged with debris and eventually ended up at Goodwill. This vacuum does a wonderful job both vacuuming and mopping, competing with models that cost three times as much. After creating four different maps, the first map, map with the 1st floor family room, kitchen and dining room room all on one level, I segregated an area of the kitchen that gets very dirty after cooking, to allow me to do a daily vacuuming and mopping of this area. The second map included a living room off of our raised entry hall. The third map included the raised tiled entry hall. The fourth map included the second level of the house, including three bedrooms and a large balcony.We have biweekly housekeeping, so most of yhe areas of the house, including a carpeted living room, tile entry hall, living room, 4 bedrooms and balcony, only require vacuuming as needed, often once in the week we don’t have housekeeping. After completing a cleaning of the whole house I was very impressed. It thoroughly cleaned including under furniture picking up an amazing amount of dust bunnies. Our regular vacuum did not fit under dressers, couch, couches, etc. Mopping the tile areas resulted in very clean floors. I did established some no go areas to keep the vacuum from hitting areas with a large number of cords. I also created no go areas under the beds and a couple dressers. Avoiding these areas, greatly speeds up the cleaning process. It is easy to establish no go areas. I can delete them a couple times a year to clean under furniture. I also put up an invisible line on the railing in our balcony, the robot did not see this as a wall, and it would feel its way along the railing, greatly slowing the cleaning process. The robot does seems to learn each time it cleans finding a more efficient way to clean. I also found that moving the chairs away from the dining room table slightly allowed the robot to clean under the table much faster. Our family room has a very large area rug in it with hardwood floors throughout. The robot was able to identify the rug area, mopping/vacuuming hardwood floors and vacuuming the area rug. The app is very intuitive easily allowing the establishment of no goes zones or invisible walls. To clean, simply restore the map for the area you want to clean, select the area you want to clean, and choose your cleaning mode of mopping, vacuuming, or both. It is very simple to use. When done the robot empties the dirty water, cleans the mopping pads, and empties the dust bin. I am very happy with my purchase. For anyone that wants to purchase a cleaning robot without spending $1000 or more, this is an excellent choice. Update: after over 30 hours of use I am still pleased with this robotic floor cleaner. Use daily to keep kitchen tile floor vacuumed. Mop cycle cleans tiles as well as a mop using highest water setting. Also great for cleaning hardwood floor and carpet. Great value for the price. No problems to report. Buy one!
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Reviewed in the United States on January 24, 2026
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