I bought a new vehicle and decided to have it rustproofed, since I plan on keeping it for several years. I decided to use Rust Check after looking at their website, and watching videos on You Tube. Rust Check is a light oil-based liquid that doesn't dry, and creeps into the seams. I scheduled an appointment at Rust Check 5335 Madison Avenue. When I arrived, I told the owner there's plastic covers under most of the vehicle. He said I remove all the plastic covers under the vehicle, then spray the bottom of the vehicle with Rust Check. He said I'll reinstall all the plastic covers when I'm finished. He said I spray all the metal under the hood, inside the front fenders, inside the doors, and remove the taillights so I can spray inside the rear body panels. He said it will take 1-hour to do the vehicle. I waited on the vehicle, and was surprised when he came out 45 minutes later, and told me he was finished. I removed the taillights the next day, to install LED bulbs. The metal inside both rear body panels was completely dry! It's obvious the taillights were never removed, because the metal was completely dry! I installed a set of factory running boards, and had to remove the plastic panel under both sides of the vehicle. The bottom of the vehicle was completely dry! I removed the rear bumper cover, so I could install back-up sensors. The metal under the rear bumper cover was also dry. I removed the interior panels on the drivers side, so I could plug in the wiring harness. The inner metal on the side of the vehicle was completely dry, and should have been coated with the oil based liquid. It's important to spray this area very well, since most vehicles rust around the rear wheels. Rust Check is only as good as the person that applies it! In this case, Rust Check was worthless! I'd highly recommend you look at your vehicle, if you're having it Rust Checked at this location! Jim, you should Rust Check peoples vehicles like they were your own! read more