DE is an abbreviation of the words "Diatomaceous Earth," which is a fossilized deposit of microscopic shells created by one celled plants called Diatoms. Food Grade Diatomaceous Earth can be used for many things around the home and in agriculture. Food Codex Grade Diatomaceous Earth (DE) is an anti-caking agent that can be added to the dry weight of animal feed. There are many that claim that DE will aide in the removal of parasites and worms that are otherwise difficult and expensive to remove by using other types of medications. While this is a popular use among livestock, many people do not realize that it can also be used for their household pets! More and more people are mixing in a small amount of DE into their pet's food with the intent to help with proper digestion. Do your pets have problems with fleas and ticks? Buy a small amount of Food Grade Diatomaceous Earth and try dusting it on their coat and watch as in just a few days your pets will be more comfortable.