Cat stopped using litter box?

I have 2 cats, a male and a female, both almost a year old. They’ve both been fixed. The male cat has started pooping all around the house, not just in one spot. I’ve talked to the vet, and the poo looks normal, so I don’t think it’s a health problem. Buy Generic Cialis Online I think it’s a behavior issue. They each have their own litter box, and I clean them twice a day. The male is the dominant one, so I don’t think the female is blocking him. I’ve been using a training aid spray made by Hartz on the spots that he’s pooped on, and he doesn’t go in the same place twice. He’s so sweet, so getting rid of him isn’t an option. Any ideas?