Hmm, okay Guru Jennifer says this.... If talking to them did nothing, send them a little note in the mail that says you have small children who like to play in the yard and that with their cats roaming free and urinating and deficating all over the place, it makes it virtually impossible. Tell them you'd love to work together to come up with a solution, and could they please call you by such-n-such date (about a week) to work something out. Politely tell them that if you don't hear from them, you're going to start trapping any stray animal on your property and calling Animal Control to come get it. Then call the Jo Co Animal control folks (they are very nice) and let them know you need a cat trap. They'll bring one out and come empty it each time you catch a kitty.
