Neem oil affects over 400 varieties of insects and is an important part of an Integrated Pest Management strategy. This foliar spray is 100% pure oil from the neem tree. It's a biodegradable, fast-acting insect bio-inhibitor. The oil is absorbed by the pests and interferes with reproduction and feeding for a steady decline in population. The 8 ounce bottle makes 24 gallons of solution.