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3M Marine mildew block is a non toxics spray to be used indoor and outdoors on marine surfaces where mildew growth is a concern. After cleaning any mildew from the surfaces to be treated, spraying 3M Mildew Block creates an invisible barrier that prevents mold and mildew growth.
Specifically designed for harsh marine environments. Helps keep surfaces looking cleaner and newer longer, reducing amount of scrubbing and harsh chemicals needed to remove mildew. Ideal for above waterline applications. Works on variety of cleaned surfaces, such as carpeting, deck furniture, rub rails, sail fabric, seat cushions, showers, etc. 3M Marine also offers a stain remover to eliminate mildew stains before applying the block spray.