Simply sprinkle around your pet's living areas, and you can provide great environmental protection against pesky fleas and other crawling insects. Diatomaceous Earth kills insects by piercing its shell, causing them to die by dehydration, not chemicals. As soon as insects come in contact with DE, they die within 48 hours, but it's completely safe around your children and pets. Good for any area in your pet's surrounding environment: floor, bedding, carpeting, baseboards, cracks and crevices and more.