Aero-Sense TKS De-icing Fluid works as a freezing point depressant and acts as an anti-icing and de-icing agent. Intended for use in the prevention of in-flight icing on aircraft equipped with TKS de-icing systems (‘weeping wings’) but can also be used for ground de-icing of aircraft. TKS De-icing Fluid is safe for use on painted, metal, plastic, rubber and glass surfaces.