There is very little room in Usain’s wet bath for a trash can. The space between the toilet and the sink is the best place for it, but it’s very narrow. We struggled to find a solution until one of us remembered that we had a couple of old Tupperware cereal containers in storage that we know longer used. We tried one out and it fit perfectly, so we put a plastic grocery sack in it and found our solution. When we started taking the cats on our adventure then we added the second one to use when scooping the litter box.