Here in SE Texas, we have are overrun with copperhead snakes. They are everywhere and I try to always wear boots while in the yard. With a bad heart, I can't afford to get bit. Has anyone tried diatomaceous earth (DE) as a snake barrier for their AP system or other area with success? I will use the food grade variant of DE when I put together my proof-of-concept AP rig later this summer. I'll pl…