u/Complete-Mixture-445

So me and my husband found a kitten 8 months old on Sunday under our car so we brought it inside, noticed he had a bad eye, and was congested and had mucus. So we decided to help him get better then take him into a shelter. We have a dog and another cat already. So we got a box put litter in it and put him into the bathroom until he understood the assignment. Fast forward it’s been 4 days and the kitten does not go into his litter box. Anywhere but his litter box. I’ve even picked up his poops and threw them in the litter box so he knows that’s where he needs to go. I really just don’t know what to do anymore. I don’t want him roaming around and just go anywhere, but he doesn’t seem to try. I need help please!! 😩😩😩😩😩