For difficult to train dogs, Nature's Miracle I know makes one scented that I've had good luck using to train a dog, but for every day use, for mine that use piddle pads I get the big washable pads they use in hospitals for people, and then I can just wash and reuse until they wear out - Makes it much cheaper, easier, and far less waste (I'm all about being as green as I can be!)
__________________ Momma to King Louie 
Missing my angels  California Lily and  Benjamin Button, forever in my heart |