This long-forgotten gem of a cleaning agent may be used with a little water or vinegar to lift even the most stubborn stains. Unattractive grout driving you batty? Mold and mildew stains got you reaching for the Prozac? Burner pans and casserole dishes giving you fits? Cream of Tartar is your new best friend.
1-2 cups of water plus 1-2 tbsp of vinegar put in a microwave bowl and put in microwave for 5 minutes.... Take out and wipe clean with a rag.