For the same reason, you probably shouldn't clean litter pans with bleach, certainly not the same one you're using as a deterrent elsewhere. (petpeoplesplace.com)
Can eat solid foods, eliminate on own, beginning to use litter pan. (cathealth.com)
With no lid or door attached, the bottom half of the plastic airline style crate acts as a large litter pan with high sides. (sitmeanssit.com)