MOLDEX® instant mold and mildew stain remover is an aggressive cleaner that erases stains before your eyes. It delivers industrial strength cleaning action without scrubbing. Formulated with new advanced bleach gel which is designed penetrate deep and eliminate mold and mildew stains. Our Active Cling™ technology allows powerful cleaning agents to remain (or hold) onto vertical surfaces longer to achieve the highest effective contact time. Just spray on and watch stains completely disappear.