Introducing Technicians Choice TEC392 Heavy Duty Enzyme Spot & Stain Remover Concentrate Dry film, leaves no sticky residue. Low sudsing and water softening. Use in hot or cold water. Use with extractor, Do All system or by hand. Use on hard or soft surfaces. DIRECTIONS: Dilute 1:4 to 1:8 parts per quart. Saturate the stain with TEC392 and allow to sit for 2 3 minutes. Blot with a clean absorbent cloth. For more difficult stains, scrub gently with a brush. Repeat as necessary.Fit type: Universal. Biodegradable Certified By The Carpet & Rug Institute Ready To Use Environmentally Safe Long Term Benefits Of Microbes Fresh Fragrance.