Description: C-Tar Melt (5 Gallon) is a mixture of non-hazardous, easily rinsable, and water soluble chemicals that has an incredibly potent penetration and softening action. C-Tar Melt won't elevate the grain or discolor the surface, and it's safe to use on wood, metal, and stone surfaces. If runoff is managed and kept for a brief time, C-Tar Melt will assist in separating tar residue from rinse water. If used as instructed, it has a potent softening and penetrating action, is biodegradable, and won't harm skin.