Have towels, then fleeced blankets, then vet/dry bed. This is to keep them dry and warm being on the floor. As to Bio-Sponge have heaps left. Had Jill on it for 3 weeks twice a day and it just had no affect except to make her poops more mushy. When Jinx started on Bactrim Thursday tried her on Bio-Sponge and it didn't agree with her either. Thanks Lynx. Bio-Sponge is in the fridge.