I bought these re-usable mesh bags after I saw the idea for sock bags. I have one for each child and hang them each on a 3M hook in their rooms. Instead of just putting their dirty socks in their hampers, we have them put them in their sock bags. As soon as its time to wash white's I twist each bag and put a safety pin over it to keep it from opening in the washer. Then wash the bags of socks with the regular white wash. After drying when its time to fold, just open each child's bag and you have all socks with complete pairs! Its almost like a miracle!