Flush with two-three cycles of plain cold water. Car battery corrosion removal. Apply baking soda and water to the junction. Vacuum after an hour. Try borax instead of bleach.
Sunlight naturally whitens clothes, too.
Coffee cup stain remover. Rub moist salt inside cup. Using gloves, rub the surface with lemon juice and salt. Soak in white vinegar. One-half cup borax in one gallon hot water disinfects common bacteria.