horatioo, property damage--mostly crops--from feral hogs in Texas has been estimated at some $40 million per year. The problem is severe enough that the legislature made it legal to shoot them from helicopters.
Golfers don't like them, either.
Danger? Just walking around on open ground at night is very much likely to be quite safe. More hazard at night in summer to get too close to an unseen rattlesnake or copperhead while wearing flip-flops.
You're from BATFE? Come right in! I use all your fine products!