I have read all the threads and searched many websites and still have a question as to what is the best brand of DE for human consumption? Perma Guard seems to come up with every search. Does anyone have any suggestions on which brand of 100% pure food grade DE is good to use other than Perma Guard? What do you folks use? I bought Red Lake food grade DE with calcium bentonite from the feed store for insects and chickens but am not too sure that I want to use it for my health.