Removed on an area of 140m. A full cycle takes 2.5 hours. Let's just say I was amazed at how much new dust and hair gets into the house every day. We set up a map with rooms, it is convenient to send to separate rooms. Does a good job with washing. The result, of course, is not like from a mop, but for every day it is quite good. A good gadget, I'm ready to buy the same for my parents.