Growers Domain
25% off Seedsman Auto Strains
Kind LED
Perma-Guard Fossil Shell Flour by Earthworks Health
Earthworks Health
Perma-Guard Fossil Shell Flour

For over 60 years, Diatomaceous Earth has been added to feeds of livestock, deer, birds, exotic animals and domestic pets. OMRI listed  Perma-Guard Fossil Shell Flour is some of the best around. It is made from the crushed, diamond-hard, fossilized shells of the diatom Aulacoseira, which is found in an extremely pure fresh water deposit that dates to the Miocene era. This nearly pure white powder is 89% (or more) Silicon Dioxide with 28 trace minerals. The shell of the Aulacoseira diatom is made of amorphous silica, a naturally occurring and biodegradable mineral. The hardness of the fossilized diatoms keep this product from dissolving in liquid while it's tubular shape (with many tiny holes along its wall) allows it to readily absorb.

When added to bird or animal feeds, Fossil Shell Flour is an excellent anti-caking agent. Some feeds, such as sweet feeds, contain substances that are sticky (like molasses), which causes the particles to clump together. This makes pouring the feed more difficult and can lead to wastage. This product will coat each particle, making it more difficult for them to stick together. When stored in areas of high humidity, some feeds have a tendency to clump and mildew can be a problem. Fossil Shell Flour can help reduce this caking and its ability to absorb excess moisture can help prevent feed from molding. Fossil Shell Flour won't swell or absorb nutrients and has no long-lasting hazards to animals.

Fossil Shell Flour should be mixed at a rate not to exceed 2% of the dry weight of the rations. In other words, when mixing 100 pounds of feed, replace 2 pounds of feed with the Fossil Shell Flour .

Fossil Shell Flour is a food grade product but is not sold for ingestion by humans. It is also not sold as an insecticide and therefore does not require EPA registration. Fossil Shell Flour should not be used in any manner other than as specified on the manufacturer's label.



Perma-Guard Fossil Shell Flour is formulated for use as an anti-caking agent to be mixed in animal feeds. Not for use in pest control. Use Perma-Guard Crawling Insect Control for pest control purposes.






OMRI Certified
Product Details
Recommended Usage
Silicon Dioxide
  • Perma-Guard Fossil Shell Flour Product Label
  • Perma-Guard Fossil Shell Flour SDS
Use & Instructions

Mixing Rate: Do not exceed 2% by weight of total ration (2 lbs of Diatomaceous Earth per 98 lbs of animal feed).

Reviews (0 reviews)
  • No Reviews yet.
    Be the first to leave a review for this product.