EarthClean Corporation develops nontoxic and sustainable products to protect firefighters, with a particular emphasis on the TetraKO granulate and liquid water enhancer. TetraKO is made from corn starch and has been proven to be more effective on the environment. It has also been proven to be more effective in knockdown and control than existing foams, fire suppressants, and phosphorous â and ammonia dioxide-based retardants. The technology has applications in wildland firefighting, home protection, urban firefighting, and railway grinding.