Lab-tested to kill 100% of fleas on contact using natural ingredients. This spray kills & repels fleas, ticks & mosquitoes. For use on dogs, cats & home interiors. It’s a preventative & treatment, depending on how you use it. 16 oz treats 3-4 pets per month, based on local pest pressure & usage. 32 oz treats 400 sq ft indoors and 1 gallon treats 1500 sq ft