(4) 1 gallon containers. This concentrated, water based degreaser offers the best features of traditional “butyl-type” products in a cost effective, environmentally responsible formula. Since it contains no butyl or similar types of solvents, no harsh fumes are created when using this product in spray cleaning applications. In addition to the superior cleaning capability, the natural citrus solvent ingredients deodorize as you clean. Safe for use on most hard surfaces.