NEW ORLEANS (AP) — A preservative used to cure bacon is being tested as poison for the nation's estimated 5 million feral hogs.
http://news.msn.com/us/bacon-preservative-tested-as-feral-hog-poison

This is actually old news, been going on for a few years now. The problem seems to be getting a delivery system that won't kill other animals. A real problem has been spillage of the product around the delivery feeder that has allowed other game and livestock to eat it. Even when they make feeders that only allow access to pigs, the pigs spill a goodly amount of product.

Otherwise, the article seems to be full of a lot of the same old made up numbers about population size, reproduction rates, and damages. Texas apparently has been at the 2 million level since 2005, yet we need to kill off 70% (noted in the article) every year. This is a number sometimes claimed is necessary to keep the population in check, despite the fact that the population is growing at rates for up to 20% (noted in other studies) per year. As dfwroadkill has noted, why do you need to kill 70% if the population is only growing by 20%?