A warning and or a chuckle. I set up my Roomba and positioned the virtual walls.Husband wants to go shoping, so we did. Upon my return, The roomba is not running, it is not parked at home, so I started to search under and behind furniture and it is no where to be found Hsband comes in and sees me crawling around and askes what I am doing, my reply was, "I lost my vacumn. Well, seems the dog moved the virtual wall and it, the roomba" escaped into a different area and was stuck, But it also shut down, so I could nothear it. Next time, I'll lock the dogs up.