If you have a grubby keyfob don't worry about it, just put it in the pocket of a fleece, insert in a washing machine and wash at 60C for 45minutes.
Remove fleece and hang on washing line for two hours and finish fleece off in tumble dryer.
When dry, remove fleece and remove fob from pocket.
Wait until the fob is cool enough to touch, then use as normal.

Funnily enough i do that with grubby tenners

 Si. <This is my name.

I eat rat poison.

A man ain't truly been insulted until he stands buck naked in front of a woman and she didn't even notice. Or care.

Something tells me that wasn't intentional! 2010 MY Vogue SE TDV8 3.6 Stornoway Grey- fully loaded