HydraMaster OJ Gelled Citrus Solvent Specialty Adhesive Remover uses all-natural citrus solvents to dissolve and break down specialty adhesives, gum, tar, tape residues, and other oil- and grease-based materials, hard surfaces, carpet, and upholstery without the use of harsh or toxic chlorinated solvents. It turns to a gel on contact keeping the solution on the material you are trying to remove, not penetrating into the surface below. Rinses easily from just about any surface, and does not leave sticky residue behind.