Why would you say it is a gimmick?
The cleaner it's self works, and I know that a razor blade works, but the two together?
I have one - it's great, it gets rid of anything on the glass - even stubborn coraline. just be careful to keep the blade straight.
what is coraline ?
Let me know if you find one, its something I would like to try
There's a couple floating around on ebay and other international sites etc. Just trying my luck locally first.
I am tired of the scraper I have, It's easier pushing a 20 ton truck around the block than it is to use a scraper on my tank.