We use 3 months. Initially, my sister gave me a robot vacuum cleaner of this model for the duration of her departure on vacation. At first I was skeptical about her enthusiastic stories about the time saved and the quality of cleaning. Within two weeks, I realized that I urgently needed the same one. He cleans everything himself, at first I controlled him, went after him and worried, now I just start and forget, he does everything himself, the main thing is to remove everything superfluous from the floor. And all this without wires, hoses and my direct participation. Another bonus, he weaned us pretty quickly, leaving all sorts of hanging wires from charging, shoe laces and other small things in which he can get tangled on the floor.