WARNING ! ! ! ! I just checked this site and the Perma-Guard ISN'T FOOD GRADE DE! IT is mixed and CANNOT be taken internally! This is an insecticide sold under the Trade Name. It is purportedly natural and not chemical. They make no claim for Food Grade.
From the site: "Perma-Guard kills by physical action, not chemical--by puncturing the insects exoskeleton and absorbing its body fluids, thus posing no harm to warm-blooded life. The addition of Pyrethrum and Piperonyl butoxide is to irritate the bug, causing physical action, allowing the DE to work more quickly. Birds who eat bugs get 14 extra trace minerals. " Bill Keen cking...@nycap.rr.com wrote: Jill, Thanks for the report on your success' with DE. A most interesting read! The blower is a great idea. I normally use DE around the foundation to keep ants out of the house, and using your method, it would be much quicker and easier.