Thanks for all the replies. If anyone has any more please share them.

Both cats are well taken care of otherwise. They have long hair & free of any mats, they (or at least one for sure) is allowed in their homes when they want.

I only know one of the cats owners, the other I am not sure of.
she has 2 cats total & just got a puppy. She says her cat is neutered (the other is a female). I can't get close enough to the cat to see if he actually is neutered but I have witnessed him spray numerous times.

I did go door to door a couple times in search of the other cats owner, either the owner is denying it or I missed them.

I did post a couple fliers in the park politely asking people to care for their pets properly, ALL the benefits of neutering/spaying, heat problems, proper vaccines etc... Yes I went above & beyond & just listed the importance of upkeep & care especially in warmer months.

I will try the downy technique to see if that helps. I can't really use the moth balls or other repellants as my cat goes outdoors & I don't want to repell her. Also I am a safe person & just the "what if" my ferrets get loose & get into it or the dogs get into it.

I have talked to the park manager & owner, they say unfortunatly they do not like it but there is no leash law on cats, nothing can really be done. If they say no cats allowed they will loose a LOT of people in the park including me so that is not an option.

I have contacted the town, the animal control, local shelter, nothing can really be done. The animal control officer is looking into it further to see if he can do anything for me.

I guess I will keep trying to see if the one male cat is actually neutered or not. & I will go door to door once more, making sure I talk to each & everyone. If no one claims the other cat I will take it to the shelter. Although the only way to catch is have a heart trap, I am sure I will get TONS of cats, belive me. I bet guessing there are about 20 cats in the park that roam daily. I am sure more are indoor only & more are in the back of the park where I don't see often.

I am worried that if I can't get the smell out that will attract other cats & soon all will be spraying my house.

Neutered cats can still spray can't they? Doesn't it just smell less?