We recommend you to have two clean wash towels at hand for your car wash. By any means avoid using a washing sponge, since no matter how carefully you rinse out your sponge, a few dirt particles (fine sand grains and other residues) always will remain trapped in the pores and cause fine scratches on your automobiles paint finish. This is not the case when using our Wash and Detailing Towels which can be machine washed after every car wash ensuring that no dirt particles remain trapped in them.