How To Get Kitten To Use Litter?

I have 4 kittens and they started playing in the litter box a few days ago. The problem is that I can’t get them to use it unless I spray them with a hose or soaking wet then put their food in there, but after 30 minutes the smell from the litter gets to strong for me…

Cat Behavior & Training How do i train my cat not to scratch up furniture?