Bleach is awesome! Mix it with some water, use a rag or sponge and scrub. DO NOT mix anything else with the bleach. Bleach is basic, and a lot of other cleaning products are acidic. Mix a strong enough acid with a strong enough base and you get mustard gas. It doesn't smell too great, on top of other issues. If you want to clean with bleach plus something, be safe and buy premade cleaner with bleach.