Organic Pest Control Is neem oil effective against all types of flies? February 7, 2026 by Riding Neem oil is a natural insecticide that effectively repels and controls various types of flies, though it may not be equally effective against all species. Its active compound, azadirachtin, disrupts the lifecycle of many insects, making it a popular choice for organic pest control. How Does Neem Oil Work Against Flies? Neem oil contains azadirachtin, […] Read more »