Tuesday and Thursday of this week will mark the temporary closing of the Sabine National Wildlife Refuge and this Wednesday will mark the closing of the Cameron Prairie National Wilfelife Refuge to combat a growing problem.

According to wildlife biologist Rob Gonsell, feral hogs tear up the marsh, root up muskrat mounds and eat alligator eggs. He says that it is hard to control the hogs considering they can breed about three times a year and up to six piglets per litter surviving.

The U.S. Fish and Wildlife Services has spent $1.3 million to control the hogs in several southeastern states.

The refuges will be closed for the operation which involves sharpshooters killing the animals from helicopters or wildlife experts setting traps after watching footage from hidden cameras that track the animal's movement.