I have had a Roomba 880 for about 3 years. Up until now I have only relied on iRobot parts. I decided to order this kit with all the extra parts. Comparing Revain prices, I found it to be the most economical choice. Everything was neatly packaged and I was very happy that the cleaning brushes were included as I hadn't received them when I originally ordered my Roomba. The only one I used was a 3 part edge brush. The first few times I used my Roomba after installing it, it ran for about 5 minutes and then I got an error message saying I needed to empty the brush bin. I have never received this warning. Since there is no "brush canister" this was particularly annoying. I'm cleaning my Roomba and doing any necessary maintenance, but doing it again to try and get rid of this warning. I even removed the brush and turned it on to try and get my Roomba to stop giving that warning. Finally, after many attempts, he stopped. I really don't know what I did to stop him. Since I've never received this error message before, I can only conclude that it has something to do with this brush. I've also noticed that this brush freezes intermittently and stops spinning. This is also a problem I've never had before. I'm deducting a star for this problem. I will update as I need to use other parts in this set.