Dishcloth Adventure. Long-lasting and environmentally friendly materials are 100 % biodegradable in 24 weeks, so this product is also a zero-waste product. Rinse your dishcloth with water after use and squeeze dry. The dishcloth can also be machine washed or even boiled for one minute to make it bacteria-free. Cellulose fiber 70 % cotton fiber 30 %. Spring/summer, fall/winter.