Pirate Laboratories Citrus Solvent is a powerful blend of citrus solvent and non-ionic surfactants engineered for versatile cleaning. It removes permanent marker, oil, grease, ink, and other stubborn stains with ease, making it an excellent choice for use as a parts cleaner. Safe and effective on carpet and upholstery, it also excels at deep cleaning neglected tire brushes by dissolving silicone and other non-aqueous soils.