Removing stubborn mold and mildew stains has never been faster or easier thanks to the powerful bleach-based formula of Mold Armor Instant Mold & Mildew Stain Remover. Just spray on, wait 5-10 minutes and rinse stains away. All with no scrubbing! Instant Mold & Mildew Stain Remover also improves the performance and appearance of new paint; just use it as a surface prep prior to painting!