We use our food grade Diatomaceous Earth to kill bugs that like to live on our pets and in our pets bedding.  We have also used it to prevent ants from getting into our bee hives.  Some people say mixing 1 tsp. of food grade DE with a glass of water and drinking it kill toxins in the body.  DE is made from the sediment of fossilized algae found in bodies of water.  Food grade DE is safe for humans and animals when used as directed.