I have a male, 5 month old kitten. I received him at 2 months old from a friend. When I brought him home he didn't use the litter box, but I realized that he didn't like the litter. Since then, I changed the litter, and he started using the box with no problem. Now, all of a sudden, he stopped using the litter box again. He now uses my dog's beds, blankets, pillows, clothing, anything fabric.
I clean out the box about twice a week, and change the litter about every 1-2 weeks. I use the Nature's Miracle pet cleaner and Arm and Hammer baking soda to try to remove the scent as best as possible.
I know that it's not like he can't make it to the box because I've seen him go up to the box, sniff it, then do his businesses a foot away. I do have a couple of ferrets who have yet to learn that they too need to use their own litter box, but the cat is not allowed around the ferrets, so I don't think he could have seen them.
I tried disciplining him, but this seems to do nothing. Also, every time he uses the litter box, whether on his own or with me having to correct him, I try to reward him. Would anyone know why he suddenly stopped using the litter box after three months of no problems? And what else should I do to try to correct this behavior?