Communities typically employ one of three methodologies to deal with feral cats:
2) Eradication, or
While it is easy to understand why doing nothing has little effect on reducing feral cat populations, it may not be as easy to understand why eradication does not work.
Although some communities continue to employ eradication (“do not feed” "catch and kill") as a remedy, decades of eradication efforts in communities across the United States has irrefutably demonstrated that this methodology does not work. There are two very real biological reasons why eradication fails every time.
Wild animals tend to have strong biological survival mechanisms. Feral cats, which are wild animals, typically live in colonies of six to twenty cats. You often never see all the cats in a colony and it is easy to underestimate the number of feral cats in a neighborhood. When individuals or authorities try to catch cats for extermination this heightens the biological stress on the colony.
This stress triggers two survival mechanisms causing the cats to
1) over breed, and
2) over produce.
That is, rather than having one litter of two to three kittens per year, a stressed female could have two or three litters per year of six to nine kittens.
Even if a community was successful in catching and removing all the feral cats from a neighborhood, a phenomenon called "the vacuum effect" would be created.
When some or all the cats in a colony are removed, cats in surrounding neighborhoods gravitate toward the ecological niche vacated. When a colony is removed but the natural conditions (including food sources) remain, the natural deterrents offered by an existing colony of territorial cats evaporate and the neighboring cats quickly enter the newly open territory, bringing with them all the associated annoying behaviors.
As we’ve seen time after time in location after location all over the country, the end result of the "catch and kill" methodology is always the same: The vacated neighborhood quickly finds itself overrun again with feral cats fighting and caterwauling for mates, over breeding, and spraying to mark their new territory. "Catch and kill" never provides a lasting solution and can easily exacerbate the problem.
Albert Einstein defined "insanity" as doing the same thing over and over again expecting different results. That is why so many communities are abandoning the failed "catch and kill" methodologies in favor of trying the newest and only humane, non-lethal alternative: TNR (Trap/Neuter/Return).
TNR is being practiced in more and more communities across the United States and around the world with amazing results.
In Maricopa County, TNR was so successful that the County Board of Supervisors enacted a resolution declaring TNR the only viable methodology they would approve for addressing the feral cat problem in this County of 24 cities and towns (including Phoenix) spread out across nearly 1,000 square miles.
New York City observed a 73% reduction in the number of stray cats impounded in a targeted zip code on the Upper West Side of Manhattan over a 42-month period of practicing TNR. TNR, correctly administered, is the only methodology that guarantees a reduction of the feral cat population in a community.
When TNR is employed effectively, all the feral cats in a neighborhood are trapped, sterilized, and returned to the area where they were trapped. They are returned under the care of a Colony Manager. The Colony Manager is a trained volunteer in the neighborhood willing to feed, water, and care for the colony and watch for any new cats. Once the colony cats are all neutered, new cats tend to be recently abandoned domestics that can be captured and placed for adoption.
There are many benefits to TNR:
1) TNR prevents the vacuum effect from occurring.
2) TNR dramatically mitigates the troubling behaviors of intact cats: fighting and caterwauling for mates, and spraying for territory.
3) Altered cats provide rat abatement, a service many neighborhoods value, such as the Flower District in Los Angeles, and
4) because feral cats tend to only live one-third their natural life span the problem literally solves itself through attrition, provided TNR is implemented community wide.
TNR also addresses the concern that feral cats tend to create a public nuisance on campuses and in parks. There is an old adage that claims you can't herd cats. In fact, you can herd neutered cats because they tend to hang around the food bowl. Because neutered cats no longer have the urge to breed and prey, they tend to follow the food bowl wherever the Colony Manager takes it. Feral cats can be trained to congregate in campus or park areas out of the way of the public or other wildlife. Free-roaming cats represent one of our biggest challenges to achieving and sustaining our No-Kill Ethic.
Yavapai Humane Society's Spay/Neuter and Wellness Clinic partners with local animal rescue United Animal Friends (UAF) to TNR. If you have a feral cat colony in your area, call UAF at 928-778-2924 and choose line 2 to leave a message with your name and phone number so that a UAF representative can return your call and help.
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