the government doesn’t want you to know this but the cats outside are free. i have four in my living room right now. you can buy a small animal trap for relatively cheap and just nab them up (places like tractor supply etc often sell them). you may also have unofficial groups that do trap and neuter in your area; check facebook if you’ve got it. sometimes private clinics or even the county itself will have super low cost spay/neuter services, also worth checking into.