GHOST-OFF restores weather exposed surfaces and easily reduces ghost sign images from vehicle surfaces. Great for tar, grease, bug splatter, exhaust residue and more! Ghost-Off is a ready to use, non-toxic, biodegradable commercial strength solvent. Simply spray onto a dry oxidized surface, wait approximately one minute and then agitate with a soft truck brush. Follow with a rinse from top to bottom with cool water and watch the white oxidation rinse away! Ghost images disappear before your eyes as oxidation is easily cleaned from weathered surfaces.