Effectiveness

• A 1998 study by Texas A&M University found trapping, spaying or neutering, vaccinating, and releasing stray cats significantly reduced the number of feral cats in a year.
  
  

Cost

• According to the Society for the Prevention of Cruelty to Animals International, animal organizations often offer spaying or neutering at a reduced cost. An animal shelter will have information on programs in your area.
  
  

Trapping

• The Feral Cat Coalition recommends placing a small amount of strong-smelling cat food on newspaper as far back in the cage as possible. It advises against using cans or bowls, as a frightened cat could injure itself.
  
  

Holding Guidelines

• The cat coalition says to keep the animal covered and supply it with fresh water, but no food for 12 hours before the surgery. Keep strays away from other pets and wash your hands after contact to prevent spreading disease.
  
  

Ear-Tipping

• The ASPCA says humane clipping of the tip of a cat's left ear shows it's been altered, and can designate it as part of a colony of cared-for feral cats, which prevents unnecessary procedures and stress to animals already spayed or neutered.