https://www.l-q-international.com/about_road-hard.html
Natural Soil Hardener, water repellent and dust control
ROAD-HARD is a biodegradable soil stabilizer and dust control agent that transforms all types of soils into hardened, water resistant platforms. ROAD-HARD is a proprietary mixture of organic polymers that are non-toxic, easily applied, and safe to use in soils and around animals.