9-D-9® is a highly-concentrated general purpose smoke odor counteractant. 9-D-9® is specially formulated to counteract fire and related smoke odors. Mixing:Light smoke odors add: 1-3 ounces of 9-D-9® per gallon of lukewarm tap water. Moderate smoke odors add: 2-4 ounces of 9-D-9® per gallon of lukewarm tap water. Heavy smoke odors add: 4-6 ounces of 9-D-9®, 1-2 ounce of Last Resort per gallon of lukewarm tap water. Application:Spray onto source of odor with pressure sprayer. Add to wall and fiber cleaning solutions as needed. See label for additional instructions.