This product is for use in all types of pre-dilution foam generating devices. Dilute with clean water. FG-HDF can be diluted with up to 50 parts water to 1 part foam solution. Not only are fluids nontoxic and environmentally friendly, they have a moisturizing agent in them. (Used in Hanging Foam Machines, Big Bear, X-Stream I, X-Stream II, and X-Stream II Pro-Porter).