Medical
Eighty Percent Sterilized and Still Growing: The Anatomy of a Colony That Comes Back
The 80% number is real, but it is a rate you have to keep paying, not a milestone you reach and bank. Most scattered, colony-by-colony TNR is a welfare intervention being sold as a population intervention, and the vacuum effect argument rescues use against catch-and-kill applies just as squarely to their own successes.
Aug 22, 2026
11 min read