Hr writes
Martins Viper Insecticide Concentrate can only be applied outdoors for flea control. It takes a minimum of two indoor and two outdoor applications for eliminating fleas (two weeks apart). Please check out our Indoor Flea Treatment Products for a product that can be applied indoors. If you have any questions, please let us know. For additional information on a successful eradication program for killing fleas, please review our article on How to Get Rid of Fleas.
Answer last updated on: 05/31/2017