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