We use 4 months. In general, as an extremely useful device - I launched it and forgot (the main thing is to remove everything from the floor))) We were surprised by the amount of dust that turns out to be present in the apartment) Of the minuses - periodically loses dust clots. Apparently the brush pulls them back out of the container. For some reason, it doesn’t remember the leg of the sofa under which it stands and all the time it beats from it when it returns to charging)