ZEP BUTYL DEGREASER HD, 1 GALLON|Zep’s Heavy Duty Butyl Degreaser is an industrial-strength formulation that cuts through greases, oils and other tough soils. Its low-foaming, free-rinsing, biodegradable formula can be applied with a mop or pressure washer, and has a broad dilution range for a variety of applications. This makes it also very economical, as it can be diluted up to 1 oz. per gallon. Available in 1-gallon bottles.