Dust

I don’t like to use dust covers. They trap volatile polymers outgassing from dielectrics leading to corrosion in delicate electronics. So I get up every 15 minutes and painstakingly remove the dust one speck at a time. LED headlamp and blue-tack on a Q-tip. I call this putting the anal in analog.

Isn‘t being analytically anal a Freudian condition requiring a serious dust-up?

I don't but it's probably a good idea. I live in AZ, and it's very dusty here.