I'm thinking of hanging a bell on my door to help my five month old puppy indicate to me that he needs to go out. for now, his potty training is more of a miss than a hit (we started him on puppy pads, big mistake, i know). He doesn't eliminate in his crate or on the floor. He almost always goes on the puppy pad. We've consistently started taking him out (he pees outside, but hardly ever poops). He does not signal before he goes on the puppy pad so it makes it a tad hard to catch him and take him outside (and yes, he is in an enclosed area).
So was thinking of hanging a bell to the door and seeing if he'll catch on and start signalling to go out. First off, how do i go about training him to do this and where can i find a bell to hang on the door? Tried searching the walmart and petco and petsmart sites but they have no bells for sale other than the bird toys. what should I do?