Cleaning chemicals help clean, degrease, sanitize, and disinfect surfaces. Degreasers remove water-insoluble substances from floors, machinery, parts, and tools. Surface disinfectants and sanitizers reduce the amount of germs and keep them from spreading on clean surfaces. Dilution control systems dilute and mix concentrated chemicals. Calcium, rust, and lime removers remove stains and mineral deposits. Specialized cleaning chemicals are available for removing or treating mold, mildew, adhesives, graffiti, furniture, carpets, hard floors, metal and stone, and pools and spas.