Hi There, I was advised to buy diatomaceous earth last year and told to sprinkle it in their food and where they dust bathe for mite control(?). I know many use wood ashes instead, and I will next time but I already have a couple pounds of this stuff. Yesterday, I sprinkled about 3 handfuls into their dusting area but it occurred to me that I really don't know what I'm doing. How much and how often should I use this? I only have 6 birds, just as an fyi. Thank you to anyone who can explain to me what I should, and should not be doing.