Equipping yourself with the E-cloth Starter Pack gets you one free E-cloth (a 20% savings). That's a lot of free cleaning when you think that its performance is guaranteed for 300 machine washings. Yes E-cloths are durable cleaning tools used over-and-over, but the most impressive thing about them is how well they clean - just about everything in any place - and do so with just plain water. The cleaning power comes from remarkable fibers with microscopic texturing that attract moisture and oil, lift and trap dirt, grease, grime and bacteria without using any potentially health-harmful chemical cleaners. The thick General Purpose Cloths are for heavy grease and dirt. The thin Glass & Polishing Cloth is for glass, light cleaning and final polishing. (Not for use on electronic scressn and delicate lenses.) These versatile cleaning cloths are excellent on stainless steel, countertops, glass, chrome, granite, marble, tile and wood - E-cloth's fiber function makes cleaning everyplace faster and easier.