Evaluated Alternative FireRein Eco-Gel™ - Firefighting gel Eco-Gel™ is a patented water additive that is instantly transformed into a highly effective firefighting hydrogel when introduced into a water stream at concentrations ranging from 1%-6% by volume. Most foams and gels contain surfactants or other chemicals that are known of being toxic. FireRein has achieved the development of a non-toxic, environmentally benign fire suppression product that performs as well as existing chemically derived products. Eco-Gel™ is the only firefighting water additive certified by UL and the US Department of Agriculture (USDA) to be 100% bio-based.