I hate to say it, but in NZ we've found our usage of sodium fluoroacetate (highly toxic to mammals) to control brushtail possums to prevent the spread of bovine

I hate to say it, but in NZ we've found our usage of sodium fluoroacetate (highly toxic to mammals) to control brushtail possums to prevent the spread of bovine tuberculosis, has had the side-effect of reducing what were once very high wild pig numbers - they scavenge the possum corpse, and in turn are poisoned. Which is very unpopular with pig hunters and people who don't like 'chemicals'. And not very feasible for countries with native/endemic mammals that may scavenge a hog corpse. But, poison works, albeit accidentally. We use a variety of other techniques to control introduced mammals - intensive trapping and poisoning in ecologically sensitive areas, judas goats[1], helicopter culling, and sometimes, just letting the free market handle it[2] - wild animal recovery is very good at keeping red deer populations at low - medium numbers... ...when the price of wild venison in Germany makes it economical. Although it has changed their behaviour - they become more daylight-averse, and quickly learn to hide from helicopters. [1]: https://teara.govt.nz/en/photograph/10136/judas-goat https://teara.govt.nz/en/photograph/10136/judas-goat [2]: https://www.doc.govt.nz/get-involved/apply-for-permits/business-or-activity/national-wild-animal-recovery-operations/ https://www.doc.govt.nz/get-involved/apply-for-permits/busin...