Stink Guard uses the most effective method of odor control - elimination of odors at their source. This is the most effective odor removing treatment available. Designed to be used on all wetsuits & dive equipment where foul odors are a problem. 500 PSI Stink Guard is environmentally friendly & safe to use where lingering odors are found. Stink Guard coverts gaseous odor molecules into a solid instead of other brands that mask or digest offensive odors. No offensive odors whatsoever - Instantly. Directions: Apply directly - No need to rinse.