100% Waterproof Formula – The only insecticide dust that remains effective in moist or damp environments where pests hide. Powerful & Long-Lasting – Kills listed insects on contact and continues to protect treated areas for up to 8 months. Indoor & Outdoor Use – Ideal for cracks, wall voids, attics, crawl spaces, and behind appliances in homes and businesses. Targets Over 30 Pests – Effectively controls ants, bed bugs, roaches, fleas, silverfish, spiders, and many more (see label for full list). Features a high-quality precision applicator for accurate and efficient dust placement Delta Dust Insecticide is the world's first and only 100% waterproof insecticide dust, offering superior pest control even in damp or hard-to-reach areas. Formulated with 0.05% deltamethrin, this professional-grade solution keeps killing insects for up to 8 months with just one application. Perfect for use in cracks, wall voids, attics, crawl spaces, and other pest hideouts, Delta Dust penetrates deep to target ants, bed bugs, roaches, fleas, silverfish, and more. Apply with the hand duster for precise, mess-free coverage indoors or outdoors. A trusted solution for long-term pest protection in both residential and commercial spaces.