Does this happen to y'all?
Place 1/2 to 3/4 c. of baking soda in a bucket or container that will hold a gallon of water. Then add a gallon of HOT water. Add your wash cloths, stir them up and then let them sit overnight. In the morning, dump the entire thing in your washing machine and add detergent. (Enough for a small load.) Run it like you normally would. Dry in your machine and voila! clean smelling rags.