Steps: ● Prepare white vinegar and water and mix them in a 1:1 ratio. ● Use a spray bottle to spray the mixture behind the built in wardrobe closet and the area where mold grows, trying to cover all the mold spots. ● Let the solution sit for 10 to 15 minutes to give the vinegar a certain amount of time to clean. ● Use a soft brush or sponge to gently wipe the mold spots, and be careful to avoid using hard objects to scrub, so as not to damage the cabinet surface. ● Finally, wipe with a damp cloth to make sure that the remaining vinegar is cleaned up.