50 LBS POWDERED VEHICLE WASH: This is the highly economical choice for fleet service. It's about the bubbling action. The bubbles contain the removed dirt so that it is less likely to scratch the paint. This highly effective, but mild liquid cleaner does not strip the wax off the paint. Just the unwanted grease, grit, and dirt. Conditioning agents battle hard water marks. It is devoid of phosphates and is safe for clear coats.