Everybody poops!
Kitten chow = poop. Less than 24 hours after starting the formula + canned food mix, we have poop from both kittens. Phew. Girl kitten caught on to the litter box after I put her in after feeding and scratched her paw in the litter, and she jumps in on her own now. She's a bright one. Boy kitten is a little slower - caught him pooping on the towel, quickly moved him to the box and he finished and buried just fine.