CSI - 82005007 - Viper - Insecticide - 16ozBrand: Control Solutions Color: Clear Features: Cypermethrin 25. 3% Viper EC is for use inside as a crack and crevice spray of nonfood areas including cabinets, windows, doors, closets, shelves, baseboards, and garages. Outdoors Viper may be applied to all areas as a broadcast spray. It has a bit of an odor to it so we recommend testing outside before applying inside. Mix Viper Insecticide at a rate of 1. 3 oz. per gallon of water and apply as a