Diatomaceous earth: Is a powder made from fossilized algae

Diatomaceous earth is a powder made from fossilized algae that contains silica. It is used for various purposes, such as treating high cholesterol, constipation, and skin problems, but it may also cause lung damage or skin wounds. 1-48 of 683 results for "diatomaceous earth" Showing products near you, with fast delivery See all products, across price ranges. Diatomaceous earth is a powder made of fossilized diatoms that can cut through the exoskeletons of insects and dehydrate them. Learn how to use it for pest control in your home and garden, and what precautions to take. Diatomite, also known as diatomaceous earth, is a naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder. It is composed of the microscopic remains of diatoms, which are single-celled algae with skeletons made of silica. These skeletons accumulate over time, forming deposits of diatomite.