When using papertowels make sure they unprinted ones. here is a piece of an article which will describe why, its easier this way then having to type it myself. IM feeling lazy tonight.

Next up, bleach. Gleaming, bright white paper towels and napkins don’t get that way naturally. There are several methods of bleaching paper products, some far better than others. The one to avoid is Elemental Chlorine (chlorine gas). This is the worst of the bunch, and is responsible for the release of chlorinated compounds like dioxins and furans, which are powerful carcinogens and mutagens. These chemicals can adversely affect immune systems and reproductive systems and are dreadful for aquatic life and wildlife. Bad, bad, bad. Elemental Chlorine Free (ECF) process may be okay—this method employs a chlorine derivative such as chlorine dioxide rather than chlorine gas, and is not the best choice, but is a cleaner process than the use of elemental chlorine.