okay my cat just had kittens and i wanted to make sure if the litter i use for her will be safe for her kittens when they are old enough to use the litterbox.Well i use Special Kitty cat litter for her and I dont know if it is the clumping kind or not.I dont want the kittens to eat it.and it to harden inside their stomachs.I know it's cheap and all but i dont have enough money for the good stuff,cuz im savin up to get her spayed.And dont say why i didnt spay her before she got pregnant.I took her in as a stray and she was already pregnant and i didnt want to make her have an abortion so yea. Is Special Kitty litter okay for kittens or should i get something else?