And besides all of the issues with safety and comfort of the poor animals, I don't see how these things could be effective at all! My mom is a professional groomer and there is definitely a lot more involved in her bathing a dog than just spraying it down with water. Maybe this kind of device could kind of work on a very short coated dog, but I don't see any way the water could even penetrate to the skin on a long haired or double coated breed, let alone get the coat thoroughly scrubbed, dematted, and undercoat stripped if necessary. They mention in the video how it is less expensive than having a groomer wash the dog- well, you definitely get what you pay for!