The only truly biodegradable barricade tape on the market, these tapes are made of non-woven cellulosic material derived from wood pulp. They are completely non-toxic to humans, animals, and the environment. Complete degradation occurs outdoors in 6 to 24 months depending on specific environmental conditions. These tapes come in 3 x 500 rolls and are printed with black CAUTION on yellow or DANGER on red tape.