The three little pigs have shown us the folly of building with straw, but Masonite did not get the memo. Its Safe ‘N Sound line of eco-friendly interior doors is partly made from seemingly worthless material. Safe ‘N Sound doors feature a DorCor low density fiberboard body that is made from rapidly renewable wheat straw, and the company also uses low emissions adhesives and sealants that contain no added urea-formaldehyde. Priced below $100, the doors are available in smooth and textured wood grain finishes.