Perma-Guard's FOSSIL SHELL FLOUR® is a very pure form of Diatomaceous Earth (DE), commonly referred to as "Food Grade". Used as an anti-caking feed additive for bird seed or animal feed, DE is especially beneficial to "sweet feeds" containing sticky substances like molasses, or feed used and stored in areas of high humidity, causing it to clump. Fossil Shell Flour® improves the flow of sticky feeds by coating each particle. Its ability to absorb excess moisture also helps prevent feed from molding.
Fossil Shell Flour® is mined from an pure fresh water deposit of the diatom Aulacoseira, created in the Miocene epoch. The shells of this diatom are composed of amorphous silica, and prized for their uniform shape and hardness. Being super hard keeps them from dissolving in liquid, and holes along the diatom walls allow it to absorb moisture, making it a great anti-caking agent. Fossil Shell Flour® is almost pure white when dry and appears light tan when wet. Other diatomaceous earth deposits often contain excessive levels of a particular mineral, such as iron, or a high percentage of clay, resulting in a darker color or a reddish tint. Perma-Guard Fossil Shell Flour® is OMRI listed, certified Kosher and accepted for use in the Organic Certification process. Available in 1 lb, 2 lb, 5 lb, 10 lb and 50 lb bag sizes. We've also got Dusters & Applicators, too! Please see links below for Pricing & Availability!