Look closer at your computer keyboard and you might get some extra insight as to why your keys crunch instead of click. When you eat at your computer, food and nasty bacteria can get trapped under keys making it ground zero for germs. Don't reach for the cleaner quite yet! Standard keyboard cleaners contain toxins. Instead give your keyboard a good shake to loosen crumbs then use a paper towel dampened with sterile water and alcohol, or organic disinfecting wipes to clean between the keys.