When I bought my first front loader, the salesman told me to clean it periodically this way. Put 2 cups vinegar mixed with 2 cups warm water in machine. Run a regular cycle using hot water. (Can do this twice, if needed). Clean about every 3 months. Then, mix 1 c liquid bleach with 2 c warm water. Pour in the crevice of washer (rubber seal). Add 1 capful detergent in in washer. Close door. Add 1/2 c bleach in soap dispenser cup. Use hot/cold cycle.Use about every 3 months. With my newer front loader, have not had to do that. However, I frequently just leave the door ajar for awhile after washing a load. Also, I have found that using the soap "pods" always gives you the exact amount of soap. I use Oxyclean, too, and my whites come out really white -- no yellowing.