Add Helium recommends using this disinfectant over all other brands for disinfecting your rebreather. It disinfects on contact and is the most effective product on the market available today. Steramine Sani-tabs are used for sanitizing food contact surfaces. For sanitizing dishes, glasses, and utensils: Wash articles with a good detergent in first sink compartment. Rinse with clean water in second sink compartment. In third sink compartment use 1 tablet per 1 gallon of warm water. Allow several minutes for tablets to dissolve. Immerse articles for at least one minute or for contact time specified by governing sanitary code. Allow articles to air dry on a rack or drainboard. To use as a spray to sanitize food-processing equipment, sinks, countertops, refrigerated storage and other hard non-porous food contact articles and surfaces: Wash and rinse all articles and surfaces thoroughly. Apply the solution (1 tab per 1 gallon) using a hand trigger sprayer or wipe on. Allow surface to remain wet for at least one minute followed by adequate draining and air-drying. This product kills HIV-1 (AIDS virus) when used as directed for sanitizing. Sold by the bottle. Each bottle contains 150 tabs. Due to US DOT regulations, this product is ineligible for expedited air shipping.