Natures Wisdom Food Grade Diatomaceous Earth is totally organic and safe. It contains less than 1% percent of crystalline silica. Some uses include: household pets, gardens, flower beds, field crops, grain storage, and livestock feeding. Diatomaceous Earth is Mother Nature"s product with no harm to the environment, pets or to people. Diatomaceous Earth is not an earth, it is the fossilized remains of microscopic shells created by one celled plants called DIATOMS. DE kills by physical action, not chemical, by puncturing the insects exoskeleton and absorbing its body fluids, thus posing no harm to warm-blooded life. Moreover, on any surface, these natural pesticide products have a remarkable repellency factor. As long as it is present, insects tend to stay away, making a serious infestation unlikely. Also, the more it is used, the more an environment is created that tends to make insects feel unwelcome. Out of 600 deposits in the US only 4 are considered "food grade" by the FDA standards. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.**When purchasing make sure you are selecting AG Organics as the seller to receive the NATURES WISDOM BRAND. Other sellers have tagged on to our product page claiming to sell our brand. Fact is AG Organics is the EXCLUSIVE distributor of the Natures Wisdom Brand. Other sellers tag on to our pages and claim to sell our brand, clearly misrepresenting the product. If you order from a seller other than AG Organics you will be disappointed. We are working with Amazon to resolve this issue. Read the customer reviews on all our pages and AG Organics Feedback page and make an educated decision. We trust you will make the right decision and appreciate your business.