ODOSHIELD UNSCENTED CONCENTRATE GALLON. Tired of waiting for enzymatic odor products to eat away odors and erase stains? Now comes Odo-Shield, a USDA authorized, non-solvent cleaner and odor eliminator that works on contact. One gallon can make 42 gallons for neutral ph mopping, 21 gallons for carpet shampooing, 8 gallons for odor eliminating spray cleaner or 4 gallons of extra strength odor spray. This product is used in everything from detailing auto interiors, laundry cleaning, pet mess clean-up, home interior cleaning of fabric surfaces for soiling and smoke and dish/utensil clean-up in kennels. The most asked question by kennel inspectors to users of Odoshield, What happened to the smell?