I just got my ProVari Mini in today and there was a piece of dust on the inside of the LCD screen and it was driving me nuts so I got my long wooden qtips out of my firearms cleaning box and stuck it in the battery area and it wiped the glass right off. Those wooden qtips come in handy for everything I swear lol.
FWIW I got a box of like 1000 for 10 bucks at tucker. I have had the box for 6 years now and still have plenty I say the investment was worth it haha