I live in Sheboygan, which is an hour north of Milwaukee. The Sheboygan Humane Society has a low-cost spay/neuter program for cats, dogs, and rabbits (finally added, thank the lord!). I would suspect that the Milwaukee and Ozaukee shelters offer something similar. All you have to do to find out is call the shelter and ask. They [i]love[i] to see more cats get neutered so they don't have to deal with the kittens! You'll need to fill out a little paperwork and such, but it's a good deal. I think the Sheboygan program costs $35 and also does some vaccinations.