We got a set of these for our puppy, and she picked up on them pretty quick. We've got walk, food, play, and outside. It's not perfect though. Like she's supposed to hit the walk button when she needs to go potty, but occasionally instead she'll take a shit on the floor and then hit the button. "Look dad I pooped on the floor so we can go outside now!" And I feel like a play button may have backfired cuz she slaps that fucker all day long. I mean they aren't going to train your pet for you but they are a useful tool. I'm much happier that she's smacking the button instead of clawing at the front door.