The company that I use to work for used the TNT product. It is very expensive but it dilutes to I think 7 gallons of chemical to 47 gallons of water to make a 55 gallon drum. Personally I did not see it being worth the money. With that company we high pressure soaped the trucks scrubbed and rinsed them all with hot water. I get better results without scrubbing with another chemical that what was achieved with that stuff. I thought that was a brushless wash. All I know is if I was spending the money to buy that stuff I would not expect to have to scrub.