Both food grade and feed grade diatomaceous earth products are made of amorphous silicon dioxide, an odorless powder. Small ...

Food-grade DE should suffice for houseplants. In order to take care of houseplant pests , wait until the top layer of soil dries out. Sprinkle some DE on top, and let it do all the work.

Filter grade: This type contains around 60% crystalline silica. It’s toxic to mammals but has many industrial uses, including water filtration and dynamite production. What is diatomaceous earth ...

Most food-grade titanium dioxide is around 200–300 nanometers (nm) in diameter. This size allows for ideal light scattering, resulting in the best color ( 1 ). To be added to food, this additive ...