Safe on most surfaces Stable oxygen stain removers make Dip It safe on plastic, china and metal surfaces. Ordinary destainers containing chlorine will pit and corrode plastic glaze surfaces and increase the staining problem. Ideal for coffee urns. Use Dip It to clean all aluminium and stainless steel coffee urns and dispensing equipment. Effectively removes rancid coffee oils and tannins which can destroy “fresh brewed” aroma and cause off-flavours. Use as a Presoak. Contains special wetting agents to help penetrate and loosen food soils and tough coffee, tea and fruit stains. Presoaking promotes one-pass washing. Effective in all water conditions. De-staining action remains powerful in hard or soft water.