Yeah our nappy bin lives on top of the chest of drawers for this very reason. Our disgusting (and otherwise terribly cute loving and fantastic doggie) also eats cat poo (meaning the kitty litter tray gets speed cleaned every time she uses it), tissues, rubbish, dirty socks, as well as lumps of things like compost, organic fertiliser and I suspect occasionally bird poo. I suspect the scavenging is a survival instinct, there would have to be some nutrients in that lot, surely??