Urbanns Flea & Tick Powder uses Diatomaceous Earth for Pest Control. Diatomaceous Earth (DE) comes right from the earth. It is amorphous silica, or a loose, powdery substance that can be used in several ways. Because it is natural and contains no additives, you can feel confident using it around the home or garden. It is also known as diatomite, fossil fleur or kieselgur/kieselguhr. At home it can be used for a natural way to control various pests that infests your home, pets or garden. It can be used for taking care of fleas and ticks affecting your pets at home. Some pure varieties are also used for human consumption and in animal feed to kill worms and improve digestion. If inhaled in large quantities it can lead to some irritation in lungs, but otherwise it is completely safe to use at home, garden or on pets.