This product is environmentally safe and non-toxic. And lasts a very long time/this easy-to-use treatment has benefited both residential and commercial users for decades , by beautifying homes and businesses. It can be applied to decks, fences, siding, and more! Eco wood treatment is a proven wood treatment that gives all wood a silvery patina/high end aged weathered look,can be used in exterior or interior applications eco wood treatment mixes completely with water,no inert particles are added.A natural organic product with no harmfull chemicals,eco wood treatment is a member of united states green building council, leeds, this is a eco-friendly product