Otis Technology Suppressor Cleaning Fluid Concentrate (16 oz) this biodegradable formula is non-toxic, non-flammable and non-hazardous. The solution helps remove most carbon fouling and build up from suppressors with a quick and easy cleaning process - soak, scrub, rinse, dry, lubricate. Use a 1:1 ratio of Suppressor Cleaning Fluid concentrate to warm/hot water is recommended and creates 32 oz of cleaning fluid Safe on all mil-spec and factory finishes including anodized aluminum, stainless steel, Inconel and titanium Although this solution is proven safe on most materials and finishes; we recommend that you spot check cleaning solution on an inconspicuous area of your supporessor's finish before use. Ideal for replenishment of Suppressor Cleaning Concentrate in the Otis Suppressor Cleaning Kit or for do-it-yourselfers Quick and easy cleaning process - soak, scrub, rinse, dry, lubricate Biodegradable formula Non-toxic Non-flammable Non-hazardous