Trap-Neuter-Return (TNR) has proven to be the most humane and effective method of managing feral cat populations. With TNR, a feral cat is humanely trapped, spayed or neutered, then returned to the location where they were trapped. It breaks the breeding cycle while allowing the cat to live out its natural life in its original territory.   It is easy to do and there are many written instructions and support groups to help you. 

TNR reduces homeless cat populations by sterilizing cats so they cannot reproduce. TNR, when accompanied by ongoing homeless cat management, is the most effective, humane method of reducing homeless cat populations.  Sterilization helps make cats better community citizens; colonies gradually diminish in size. By reducing or eliminating yowling associated with mating, fighting and wandering, TNR makes colonies more stable, decreases the number of newcomers and improves the health of the cats.

TNR Overview - SFSPCA

How to Conduct TNR - Alley Cat Allies

Humane Trapping of Feral Cats - Alley Cat Allies

Humane Trapping - SFSPCA

Where to Rent/Borrow/Purchase Humane Traps