We have a 3500 sq ft home - so it takes a couple days if I want to do the whole house. It has to return to the doc to charge more often than I expected. I usually do 1 or 2 rooms and then let it fully recharge, which takes a while. I am happy with the over all performance and it picks up most things. It can't get under the kitchen cabinets so I have to sweep out any crumbs that are under it first.