These roller brushes fall apart so quickly. I replaced mine about a month ago and they are already splitting and missing pieces. They work great for the first week but quickly fall apart after that. My husband bought my first roomba for me back in 2016. We have always loved roomba and enjoyed the easy it gave us to keep our home clean with kids, pets and our busy schedule. We never had replacement parts fall apart like this with our two older models. I wish we would have never upgraded. Please fix your parts before you loose loyal customers.