Natural Product - Composed of 4lbs of 100% ground freshwater diatomaceous earth with absolutely no additives or fillers. OMRI Listed - Listed with the Organic Minerals Research Institute, a non-profit organization that reviews products against organic standards. Powder Duster Included - Powder duster in the bag for easy and efficient application of diatomaceous earth on animal feed Supports a Great Cause - Harris donates a portion of profits to support the local Etowah Valley Humane Society. Made in the USA – Mined in Nevada and packaged in Georgia