That may be another reason to prewash all fabric. If you don't prewash do you have any idea how many hands have touched the fabric before you and where they've been. I know many people who go from machine to meal preparation with out washing their hands. Something to really think about. People laugh at me and are sometimes offended if they come to my house to help with a meal and I insist they wash their hands before helping and before eating. Know how much dirt is on a pet before preparing a meal?