Hydrogen peroxide's effectiveness will diminish if it is exposed to light, so be sure to store it in a dark spray bottle to keep it effective.


If desired, add a little bit of vinegar to the hydrogen peroxide solution in order to up the effectiveness of the solution.
 A spot test will test whether the hydrogen peroxide causes the surface to fade.
, Let the air breathe if at all possible, as the smell of hydrogen peroxide is very strong and unpleasant.

Place 3% hydrogen peroxide in a dark spray bottle.
Perform a spot test on the surface where the mold is on.
Spray the moldy surface completely and let stand for 10 to 20 minutes while the peroxide attacks the mold.

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Leave for an hour or two.
Wipe the surface clean.
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