The Camco Pro-Strength Black Streak Remover cleaner is a specially formulated cleaner and degreaser that is ready to use and powers away stubborn black streaks caused by window and door sealants and roof coatings. The Pro-Strength Black Streak Remover powers through black streaks, bugs, tar, grease, oil and dirt that have built up over time, helping to restore a like-new appearance. Not for use on rubber or membrane roofs. Size: 32oz bottle.