Works well in places you don't want the robotic vacuum to enter or exit. Our triple glass slider has a large gap between the interior floor and the third door when closed. The vacuum got stuck in this gap and had to be removed before it could continue. By placing a strip along the edge of the floor, the cleaner will back away when trying to get close to the door. In addition, at the master, it was laid around the bench, so the vacuum cleaner "climbedβ to the base of the leg, which passes on all four sides, but "climbed outβ at the back and fell into the trap. The bench is against the wall and I cut off three curbs and laid them on the ground on three sides. Now the vacuum cleaner does not try to "climb" onto the base and does not freeze.