I have a roo at an animal hospital recovering from a broken leg, He has been there over a month and all of a sudden today they call and ask me to come treat him for lice and said they are all over the place. He had nothing going in. I went and treated him but I know they were not lice. They were very tiny and I had never seen them before and the thing is he is in a stainless crate and right above his crate are a bunch of different dry food bags for dogs and cats. These tiny critters were crawling all over the stainless stell cages traveling about and that is why I think they are something else perhaps came from the feedbags. about the size of or a little bigger than ground pepper I think. If they were a louse or mite I think they would stay on the host. Anyone know what this could be???