I read up on combatting mites and other pests and the "Chicken Health" book says sulfur works better than DE and can also be used internally so I want to give that a try. I searched Amazon but couldn't find any. Where do you buy yours? Thanks!
Some garden centers, such as Southern States Co-op sell it, and here is a link for food grade sulfur: https://www.amazon.com/dp/B0039D2KQ2?psc=1