IMHO...I think you are wasting your money. Reason being...cars rusting through just isn't a problem any more. What is the last "late" model car (that hasn't been in an accident) that you've seen rust on? Noting that you live in Toledo where they salt the road, I can understand your concern. If regularly go to a car wash and spray the underside, I think that will work fine.CiscoKid said:Has anyone had their car undercoated by Ziebart or any other undercoater? I am wondering if it makes the interior quieter.