. They did wipe out all the screw worms in Texas by dropping sterilized male flies from airplanes all over Texas. It's hard to believe that worked.
I remember when I was a kid finding them little boxes they dropped the flies in way out in the pasture. They were a little cardboard box maybe 6" square. Had written on em what they were for.
I know one of the old ranchers up in Llano did say that the hog cholera that came thru in the late 50’s early 60’s did quite a number on all the pigs feral and domestic. But there were still lots of isolated pockets.
