The U.S. government plans to open what amounts to a fly factory by the end of the year to breed millions of the insects in Texas near the border with Mexico as part of an effort to keep a flesh-eating parasite from infesting American cattle.

The facility will breed millions of sterile New World screwworm flies at Moore Air Base, Agriculture Secretary Brooke Rollins said Wednesday.

Screwworm is a parasitic fly that targets warm-blooded animals and has the potential to disrupt Texas’ $15 billion cattle industry.

Texas has stopped providing new funding toward building a U.S.-Mexico border wall after lawmakers quietly approved a new budget that does not include funding for the project.

Four years after Gov. Greg Abbott said Texas would be the first state to build its own border wall, lawmakers quietly stopped funding the project.