Saf-T-Bak makes rugs highly resistant to sliding. It stays on after r epeated washings; anchors loops and fibers thus preventing unraveling and tuft loss. It helps rugs to retain their shape and protects the b ase from moth damage. Saf-T-Back eliminates wrinkles adding bulk and texture. A small amount of Saf-T-Back applies to frayed edges prevent s further fraying. Pint size covers 6 square feet. Quart size covers 12 square feet.