Natural Outdoor Spray is made with natural cinnamon oil, clove oil and cedar wood oil which kills fleas & ticks by contact with residual effect. This product is also effective to kill and repel black flies & mosquitoes. Natural Outdoor Spray can be used around all ages of animals and it is great for use one yards, kennels, pool/patio areas, outside surfaces, trees, shrubs and more! This product is not known to be harmful to any grass, trees, shrubs or flowers.