These brushes drove me nuts, after a few weeks they are all short and twisted. but I think it's more due to the layout of my house. This is a 1950's house with a lot of transition marks from dressing. With that said. They can last longer in your home. The long one, of course, rotates on itself. However, I noticed that it actually hits the wheels, preventing hair from getting into those compartments, and seems to "dig" a bucket of dirt every day, not half , when I just removed the brushes. Mine…