Quote Originally Posted by Oldskool View Post
As crazy as it may sound, I use the security bit, take the cartridge apart. Then use toothpaste and a toothbrush on the contacts. First I use straight toothpaste by rubbing it in with my fingers until the toothpaste turns dark. Then I wet the toothbrush and start brushing away at it. After I feel it has been cleaned off well I rinse the contacts off and brush until the suds go away. Finally I polish it off with a cotton towel. You'd be amazed how clean it gets. And toothpaste is always around and cheap.
I remember you mentioning that. If it works that well, no wonder it's used for our teeth The more surprising thing is how well the aforementioned cooktop cleaner works. It has never failed me thus far.