No
experience with the product but this sort of babble on their website is enough to keep me well away: "Chemical free: Eco Wood Treatment is a powder composed of natural substances from minerals."
Either they don't know what a chemical is or they don't know what a mineral is or they are fibbing. Most importantly, they refuse to say what is in their product. Which means it's probably something people wouldn't think was very "eco". "Clean" means something different to each of us, but without honest disclosure of ingredients or even the least hint of the mechanism of preservation this product uses, I would keep it well away from my food, animal, and living systems.