I do have diapers but he seems to go into hiscage when he needs to go. He does not poop or pee on anyone or anything. lol! I feed him a special can of meet made for primates. And he also gets Fresh Fruits an Veggies, Yogurt, baby cereal,Monkey biscuits, Monkey O's He loves pizza crust and Jello. mainly they can eat almost anything as a person eats. The minutes he sees me get home from work at 8:30am he knows it it breakfast time and playtime out of his cage. He starts calling me with his little screech. TOOO CUTE! I have NO regrets on spending Big bucks for my Little Man.