Are you narked by the crud and crumbs that lurk under your computer keyboard? You can easily remedy this, by hoovering your keyboard.
Just make sure that your vaccuum cleaner isn’t set at full whack otherwise the keys themselves will be hoovered off and you’ll have to root around in the hoover bag to retreive them and then spend bloody hours trying to put them back on. And that’s harder than you think. Without frame of reference, can you recall exactly where the colon/semi colon key goes?