My helper! Collects wool from my two cats with a bang. To my surprise, even the corners are clean. He goes where he needs to, does not get stuck on the rapids. I start every day, as I leave for work, though I close the door to the room. my living creatures are wary of him. When there is little charge, he goes to the station himself, there has never been a miss. Always hit. True, you need to place the charge not in the corner, but along the wall.