Natural Chemistry's Natural Yard & Kennel Spray combines natural botanical ingredients that work synergistically with one another to provide effective and natural flea & tick protection. Natural Yard & Kennel Spray has residual effect to help repel and kill fleas, ticks, black flies and mosquitoes. This easy to use product is for use on: yards, kennels, pool/patio areas, outside surfaces, trees, shrubs and other flowers.