Microban® Disinfectant Spray Microban® is E.P.A. approved for many decontamination applications including water damage, sewage, toilet overflow, mold, fungi and mildew. It is a water based, nonflammable, bactericide, fungicide, deodorant and antimicrobial. Ready to use pH is 6.5–7.5 Mixing Instructions: Use full strength. Do not dilute. Apply by a sprayer to porous surfaces at the rate of 1,500 square feet per gallon. Spray surface until moist, brush into carpeting and allow 10 to 20 minutes dwell time. Can be extracted or left on the surface.