Misinterpretation of a Recent Study Threatens Cats’ Lives
… trap and kill” programs.
Lethal approaches were utilized over decades upon decades to “manage” community cat populations to no avail due to a phenomenon known as the Vacuum Effect. That doesn’t keep “experts” from calling to retread old ground and slaughter cats needlessly every other week—with the bloody bill falling to taxpayers, of …
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Alley Cat Allies Exposes Misrepresentation of TNR in The New Yorker
… again. However, trapping cats and “euthanizing” them in shelters is not some untested idea; it was the status quo for decades and failed miserably due to the Vacuum Effect—a phenomenon in which other cats move in to take advantage of the resources that sustained the colony that was removed. Alley Cat Allies launched TNR …
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Our Goal: Protect Cats and TNR in Granite Shoals, Texas
… poison, and mass kill cats. Killing or otherwise removing cats from their outdoor homes has proven ineffective around the world due to a phenomenon known as the Vacuum Effect. While removal may temporarily reduce the number of community cats, the population quickly rebounds as surviving cats move in to take advantage of the newly available …
Go to: Our Goal: Protect Cats and TNR in Granite Shoals, Texas
On October 16 - Global Cat Day® - Alley Cat Allies Makes a Stand to Prevent Cats from Being Killed on Caribbean Islands
… attracted to resources such as food and shelter and move in to fill the space, quickly bringing population levels back up. This phenomenon is known as the Vacuum Effect, and it is well established in research.
Alley Cat Allies also advocates for more people to understand that killing is not the same as conservation, and …
New Zealand Should Not Scapegoat Cats
… of killing cats to save wildlife is both scientifically and morally flawed. The removal of cats doesn’t work, either, because of a phenomenon known as the vacuum effect. While removal may temporarily reduce the number of unowned community cats living outside in a given area, the population quickly rebounds as surviving cats move in …
Protect Sioux Falls Cats with Trap-Neuter-Return
… to food and shelter that exist in the area, and move in to fill the space, quickly restoring population levels. This is a phenomenon known as the Vacuum Effect, and it has been observed in many species.
In sharp contrast, scientific research has shown that TNR ends the breeding cycle, meaning no new litters of …
Letter Opposing Port Neches Feeding Ban and Requesting Reconsideration
… and unvaccinated cats, either from neighboring territories or born from survivors. Each time cats are removed, the population will rebound through a natural phenomenon known as the “vacuum effect,” drawing the community into a costly, endless cycle of trapping and killing.3
In contrast, TNR is an effective and non-lethal program, supported by the …
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Hawaii, "Sanctuaries" are Not a Way to Manage Cat Populations
… dangerous for community cats – unowned cats who live outdoors.
Removing community cats from their outdoor homes will also lead to a well-known phenomenon known as the Vacuum Effect. Cats remaining in the vicinity will move in to take advantage of the newly available food and territory. The Vacuum Effect has been observed in many …
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Alley Cat Allies Condemns Planned Cat Slaughters on Cayman Islands and Île Amsterdam
… temporarily reduce the number of cats in a given area, it is ultimately counterproductive, because the population of cats will rebound quickly. This is known as the Vacuum Effect, and it has been documented worldwide in many species. Cats who were not trapped, and new cats from nearby areas, will simply move into the territory …
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Humane, Effective Solution Needed for Audubon’s Cats
… move in to take advantage of the available food and shelter. As a result, the cat population soon rebounds and can even grow beyond its original size. This is a natural phenomenon known as the Vacuum Effect, and it has been observed in many species.
The only humane and effective way to address community cat