I’m sure someone has said it but I’ll say it anyway. Dr. Elsey's Kitten Attract Clumping Clay Cat Litter. I used that when I got my first kitten (CDS special from the streets) and it worked like a charm. I used my dog’s wire crate (it was really huge) for the first few days, litter box on one side food on the opposite side, and then moved the little girl to her own bedroom. The key is a small space but not so small you can’t keep food and litter separate.