I paid $50 for the basic package (undercarriage, wheel wells and bumper some thing). Very young kid sprayed the car ten minutes and said it was done. I asked him whether he sprayed the wheel well. He said he didn't because it is not covered in the basic package. I asked him whether he has sprayed a car before. He said this was his first job but another guy was supervising him. Apparently, the guy who was supervising has sprayed only twice before. When I complained to the service manager, he got a experienced tech to spray again. he even took out the plastic cover in the front part of the undercarriage to spray and sprayed the wheel wells too.
I found the staff at CT didn't know what each package covers when it was clearly indicated on Corrosion Free brochures. The service advisers and asst. manager didn't know how many years were covered under Corrosion Free's warranty. Basically they were clueless.
I could have done same thing with a can of Corrosion Free or WD40 if I got under the car. In fact a bought a can of WD40 in summer to spray under the car but didn't like the idea of crawling under the car.