Young Kittens Peeing Outside Litter Box
I have three 4-1/2-week-old kittens. When we are not home or in bed, they stay in a large kennel, with litter box, food, toys, and bed.
I have noticed that they don't consistently use the litter box. Most of the time they poop in there, but I am starting to notice that they are peeing outside the litter box.
The next step is obviously to put another litter box in there-one litter box + 3 kittens = issues. There is room, although the second litter box will go in their play area. Oh, well. They don't play there very much anyway.
My question is about litter. I have read and been told not to use any sort of clumping litter with kittens this young. But at the pet store (PetCo), almost EVERY litter is some sort of scoopable or clumping. The only option left to me is newspaper or pine pellets (I have Feline Pine in there right now).
What are your thoughts on litter for kittens this young?