Is there an open season on them? Have you ever hunted them?
he Feral Hog in Texas
http://www.tpwd.state.tx.us/huntwild/wild/nuisance/feral_hogs/
Although feral hogs are not classified as game animals, a hunting license is required to hunt them.
Trapping is a common method utilized by sportsmen and landowners. Live trapping enables the individual to harvest the animal, fatten it up, or sell it.
Let me add to that:
Exceptions:
a hunting license is not required to hunt the following:
depredating feral hogs, if a landowner (resident or non-resident) or landowners agent or lessee is taking feral hogs causing depredation on the landowners land.
http://www.tpwd.state.tx.us/publications/pwdpubs/media/cs_bk_k0700_284_2012_2013.pdf