Get a Free Sample of Sun Frog’s Eco Fin Wood Stain (1 oz sample). It’s a brand new soy based wood stain that is environmentally friendly. Sun Frog is sold at select hardware stores across the country but you can also purchase the product online if you wind up liking it and it is not sold in your area. Head over here to request your free sample. You can choose from Transparent Cedar or Transparent Redwood.