For animals this product is a natural material. Consisting of more than 98.5 % amorphous Silica. It Kills insects and pests mechanically and not chemically. It is 100 % organic. It is a non-toxic, safe substance made up from crushed fossils of sedimentary deposits of marine life. Crushed to a fine powder and observed through a microscope, the particles resemble bits of broken glass. Deadly to any insect and completely harmless to animals, fish, fowl or food. Most insects have a waxy outer shell covering their bodies, INSECT STOP scratches through this shell causing the insect to dehydrate leading to eventual death. How it works Mode of action for insect and parasite control is strictly mechanical. The microscopically sharp edges contact the insect or parasite, and pierce their protective coating, so they soon dehydrate and die. The larvae are affected in the same way. This makes it an excellent and totally natural control, with no indicating of mechanical or chemical damage to the animal tissue. It can be used as a dust for fleas, lice and other external pests by rubbing into the coat of the Animals. Both internal and external parasite and insect pest control will result in improvement in health, appearance and behavior, as well as assimilation of feed, which means improved weight gain and lowered feed cost and a healthy animal gives more milk. This is a natural deworming agent too. Benefits 100 % natural and safe organic media to control insects and parasite. Kills insects and pests mechanically and hence insects cannot develop immunity. No added harmful chemicals. Improvement in health, appearance and behavior is observed after feeding animals with Siliceous Fossil Control of fleas and ticks Stimulates basic metabolism Converts feed better.