Cat won't stop pissing on everything...

He's been neutered... Is there any way to keep him from pissing on everything? It seems like he's marking things. He sprays.

My parents can't have him stinking up their house with cat piss, but we'd rather not see him in the garage the majority of the time. (attached to the house, it's quite humane. I just want to keep him inside.) So, anybody with any info on how to turn the spraying machine into a civilized feline,
post it up.

 

My cat used to do the same thing, he's not fixed though. The only way we were able to get him to stop was to put him outside, it's like he's retarded or something. Lol. When we do let him in we have to lock him in the room with us. If he gets out of our sight he'll do the deed.
I don't know what to tell you, good luck with it.

 

Neutered cats that still mark usually mark because there is still odor from other animals around the house that they are "remarking" as theirs. Even if you had like say, a male dog 5 years ago, it could still be encouraging him to mark whatever spots that dog may have marked. Sucks, I know. You may also have a mouse or rat problem, just one male mouse or rat leaving his musk around the house is all it takes. Even when neutered, cats AND dogs can still feel territorial and feel the need to reclaim what they feel is their territory. So with that in mind, the best suggestion I have is to do everything you can to throughly clean absolutely every inch of every area he is marking, and use some kind of product meant to neutralize old urine smells, and see if that helps. (He might also be marking his own old spots, not realizing they are his, if he's not the brightest cat of the litter...)