Dampness combined with poor ventilation and warmth from the sun's rays fosters mold and mildew growth in vertical blinds, but you can easily remove it with vinegar.
To spot-treat light mold growth, you don't have to remove the louvers from the headrail. First, clean the area with a rag or a vacuum brush attachment to remove dust and dirt.
Next, mix equal parts warm water and distilled white vinegar in a spray bottle and spritz on the molds. Allow it to sit for at least 30 minutes, then rinse with
If mold persists, apply undiluted vinegar to mold spots, let it sit for an hour, and scrub with a stiff bristle brush. Wipe with a damp cloth and pat dry with a microfiber towel.
Let it soak for 40 minutes before scrubbing the moldy areas with a sponge or toothbrush. Finally, rinse with clean water and hang outside on a clothesline to dry.