This one Im still out on… The review is for Wayfair and their customer service. I used the robot 1 time to map the areas and then first time using to clean it fell down the stairs. It’s not supposed to do that supposedly smart enough to detect… at 400 it should. It’s within 30 days and they are passing me on to manufacturer vs just exchanging it and making good on my purchase… Ive spent thousands at Wayfair moving into new home and this is not the service I expected.