We installed a cat door so 5 out of 6 cats choose to go outside to use the bathroom. Only our 17 year old cat chooses to use the litter box. That's why even though we have 6 it's really no more work than having only a few. Now that we live in the country I let them come and go as they please. I leave unlimited access to dry food in the kitchen. The cats really take care of themselves.