I've never seen that product before. It doesn't say if it neutralizes the pet odors or not it just says it gets rid of them so I don't know how great of a product it really is. Maybe someone else may know?

Does he seem to pee where he may sleep? If so he may just have a week bladder. There are drugs to help with that. Phenylapropanolymene (sp?) is one that works great.

But it may just simply be a housebreaking issue. I'd try crating him first though.

have you tried limiting his water intake?