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.
1/4 cup of baking soda in a small glass bowl and squirt in hydrogen peroxide until it makes a nice paste. Then rub it on the offending dirt/stain/grease ALSO use baking soda and then sprayed on vinegar to clean burnt-on bits in the oven (turn the oven on and leave it for a while - the vinegar steams up and the foaming action helps loosen the gunk), and I use a spray of vinegar and then a spray of peroxide to disinfect - bizarrely enough the two in succession make for actually a more effect..