Spontex Sponge Cloths are treated with an anti-bacterial agent, which protects them against the development of bacteria and bad odors, keeping them fresh longer. The cloths are ideal for wiping and cleaning all surfaces and are very absorbent. Each cloth soaks up to 5.5 ounces of water. They are supple, easy to handle and wring out, and are extra thick making them long-lasting. They are also machine washable up to 104 degrees. Spontex sponge cloths are made from cellulose and cotton, which makes them 100% biodegradable. Once you're finished with them they can be added to your compost pile.