Put extra litter boxes in the cage, even if you have to put one in each corner. (smallanimalchanel.com)
The benefit of having extra litter boxes throughout the household is that you may find that each cat picks their own particular litter box. (compassionatecareveterinaryhospital.com)
Some items to consider for these cats are products like extra litter boxes, strategically placed cat beds or cushions, thermal beds or heating pads, and low - level cat furniture. (petbusiness.com)