There was a thread on here about how Garters cannot handle 'kreatin' ?? (Spelled horribly wrong... ) Whatever. It is what fur and nails are made up of. All my garters will only ever get pinkies never fuzzies. Boas I believe have a way to 'collect' fur, nails, beaks and excrete them in a ball or save them up safely without getting blockages... Man I wish I could find that thread...