I don't mean to be a big pain about this but I've been doing a lot of calling around about DE this morning and now into the afternoon. I hate this sort of thing!! Grrr Has anyone out there used the Natural-Guard brand of DE? They sell it in Lawrence and Osage City. Perma Guard looks like the best quality but looks like they only sell online. I couldn't get thru to the place listed earlier by one of you, got a message the phone number was not in use. I'm getting a tension headache from all this calling.