Tell us about yourself!
Wow, what a terrible idea! This may work for the cheapest all-plastic keyboards, but anything better than that will most likely be destroyed. Please don't resort to this risky, lazy, urban-legend method of cleaning your keyboard.Instead, remove your keyboard's keys with a proper key-puller tool—you can get one online for just a couple of dollars—and use a damp rag to clean the exposed parts of the board.Wash the keys separately in warm, soapy water. (NOT dishwasher soap, which is highly acidic.) Rinse and dry them, then let them sit overnight to be sure all the moisture has evaporated.If you care at all about your keyboard, it's worth the extra time and trouble to avoid ruining it!
Sorry, but what's an "ear defender"? Never heard of it. In technical writing like this, it's a good idea to explain unusual things like that, rather than assuming everyone knows what they are.
Thanks—this was quite helpful!