EcoSmart has been creating safe, effective ways to eliminate pests and weeds for almost two decades. With their proprietary formulas, they are protecting you, your family, your pets and the ecosystem from harmful chemicals and disease spreading pests. The EcoSMART Natural Plant-Based Spider Blaster with Rosemary Oil eliminates spiders with the help of rosemary oil and other inert ingredients. Use the spider killer in unfurnished, non-living areas such as attics, crawl spaces, garages and basements. This spider killer spray won't harm fish, wildlife or contaminate ground water supplies. You can feel good about using EcoSmart products in and around your home.