Combust Category: Adjuvants/Utility Includes defoamers and anti drift aids. Product Description COMBUST is a premium liquid AMS replacement that will enhance the activity of certain post-emergence herbicides. Product Label Product Flyer MSDS Principal Functioning Agents: Phosphate Ester of Polyglycols, Diols, Defoamers and Blend of Ammonium Salts Inert Ingredients