I thought I would share some information about diatomaceous earth with you, specifically in regards to the last few posts.
It is important to note that, at this time, there are no diatomaceous earth products that are registered for human consumption (that is why you won't find any instructions on your bag of Red Lake Earth for this purpose). This is due to the fact that not enough testing has been done to prove any long term or short term effects. That being said, many people do consume DE (Red Lake Earth included) and experience very positive results (in fact, many people swear by it) however these results are only anecdotal and not scientific in nature.
Most often DE is used as an anti-caking agent and pelleting aid in livestock feed. As well, it has been increasingly used as a natural insecticide. It is safe to use with nearly all animals (excluding reptiles - as it may dry out their skin - and other animals with pre-existing skin conditions or dust allergies).
Although I cannot make any claims for use with humans (as no scientific studies have been done), in regards to use with animals, it is perfectly safe to feed DE to them while they are pregnant and nursing.
Both pure diatomaceous earth (white in color) and DE with calcium bentonite (grey in color) will work the same for most purposes (including pest control) however, when used in animal feed DE that contains calcium bentonite or montmorillonite is much like feeding your animals brown bread over white bread. This is due to the fact that calcium bentonite contains various micro and macro minerals that are important for health.
It is important that you contact a professional health care practitioner if you have any concerns about using diatomaceous earth.