Tough Duty is a butyl-based, ready-to-use cleaner and degreaser designed and packaged for maximum user convenience. A non-viscous clear pink liquid, Tough Duty is an industrial strength all-purpose cleaner.The Tough Duty formula is a combination of wetting and cleaning agents fortified with a solvent. Tough Duty’s wetting action is immediate even on heavy build-ups. Spartan’s unique combination gives Tough Duty its unusual ability to quickly penetrate and remove both food and industrial type grease-base soils.