Scout felt hat cleaner is specially for use on dark colored western cowboy hatsand other fabrics. Cleans hats and removes moist oil and water based stains when you spray it on wait 5 minutes, and brush. If your looking for an easy, fast, and safe way to clean and restore color to your light colored hats? Scout hat cleaner is made especially for your colorfast felt, wool, nylon, and most fabric hats. 6 oz. aerosol can. Scout Dark Colored Felt Hat Cleaner.