A high quality alkaline detergent system designed to easily and safely clean grease sludge, muck and grime on external coils. May be used in place; no removal of coil is necessary. High foaming! Spray on and rinse off. Unbelievable results! Can be used for indoor or outdoor coils. Rinsing not required. Normal condensation will carry away dirt and contamination. Light rinsing is suggested as this will help to carry additional particles of dirt away. You can use straight or dilute up to 10 parts with water.