Hoggone is a concentrated sodium nitrate poison which is specific to pigs. Although it's early days, current info suggests that there is a low risk of secondary poisoning to non target species.
There have been a few in-the-wild biological/agricultural efforts which have been wildly successful and had little or no fallout.
The one that comes to mind was the eradication of screwworm flies. They're a terrific livestock pest, and one of only a handful (maybe the only one) of maggots that feed on living flesh. Entomologists and other biologists from the USDA, TAMU, Tx Dept of Agriculture, and maybe a few others, experimented in the late 40s and early 50s with the radiologic sterilization of screwworm fly males, then released them into the wild in South Texas. The females can only breed once, then they die (usually after laying eggs on livestock hosts). They successfully bred with the sterile males, but no offspring came of it, of course. Screwworm flies were eradicated in the course of a couple years as I recall.
It's probably the single greatest agricultural victory in US history. But that sort of thing is the exception, and not the rule.
We had another program here in Texas a few years ago where baits cast out that had been infused with rabies vaccine. It took a bit longer than the screwworm thing did, but rabies is exceedingly rare in coyotes and foxes these days in Texas.
We also wiped out malarial mosquitoes here close to a century ago.
P. falciparum was endemic along the gulf coast of the US, so was yellow fever. We wiped those out with DDT.
There are others, but our track record of eliminating, or at least abating, pests without other significant consequences isn't good.