12 week old kitten and litter box

J

Hello, girlies! I just adopted a 12 week old kitten from a friend yesterday. So far, he hasn't used the litter box and I have googled everything. I have tried putting him in after mealtime and playtime, but he jumps right out... My friend told me that he will use it when he feels the need to, but I really don't want him making any messes! Any advice/tips? Thank you so much!