Well, if you don't pick up the Stools, then I'd recomend pouring a little Tabasco sauce over them, it can't hurt your dog, and it really works.

ps: Since were both working with a four month old puppy right now, I'll let you know that if he' ever knawing on your arm ( play biteing) put some on your arm...my dog never did it again...at least not on th arm!