Upon ordering, the company sends over a large pig from the farm to lick your monitor clean. Nah, just playing with ya.

These 2" critters -- chose a Spider, Caterpillar or Fish -- stick to your sceen and whenever you feel the need, you just pull the retractable cord and their soft velvet bellies clean your computer monitor. Works on flat screens & televisions too. Cord extends to approx 24"

I think I would just try to swat them off my screen the entire time, but maybe that's just me.

$6.99 each at Perpetual Kid.