Hi all, I just received my Perma Gaurd Food Grade DE.... I was surprised to see that it looks just like flour! Is that right?? I was kinda imagining that it would look like mini shells or something more gritty than flour. ummm.... Also, I wanted to add it to the girls feed, I think I read that I should add 1 lb to 50 lbs of food. does that sound right? I am also wanting to spread it around their run for pest protection and odor protection. Is there a good way to do this... a specific amount... or just sprinkle around??? Thanks for any help with this!