Where you go when you want to truly protect your car, truck, or commercial vehicle from the harmful effects of rust & corrosion. Trusted by 1500+ customers. Visit our site to read reviews and learn more. Near Dayton, Ohio and serving surrounding area with travel to select customer locations with our mobile spray unit. First Krown Dealer in the USA in 2011. Krown is an industry leading rust inhibitor developed initially for Canada's harsh winters. We can spray any size vehicles and equipment.