NEW DUST COVER CARE AND CLEANING

@stringreen , and I suppose you wear your underwear for a week. Proper dust covers certainly keep dust off delicate mechanical devices and mounted correcting to an isolated turntable closed dust covers actually IMPROVE the performance of a system by attenuating the sound that gets to the cartridge by up to 10 dB. That is cutting the volume in half. 

Can dust covers decrease sound quality? Sure,  if mounted directly to the same chassis the tonearm and platter are on it can make like a musical instrument. In order to work well the dust cover has to have thick walls at least 1/8 inch and it has to be hinged to something that is not the chassis that the tonearm and platter are mounted to. Examples of turntables that have properly isolated dust covers are; the AR XA, some Thorens tables, Sotas, and the Kuzma Stabi M. 

You can have a dust cover made for any turntable then hinge it to a base the turntable sits on and you are in business. 

@mijostyn if you look at his VS he has a dust cover on his TT. 

@juanmanuelfangioii , then why the comment "throw it out"?

@mijostyn no idea is a bit strange. 

mijo....so taken with your interest in my underwear.   I don't use a dust cover because it resonates with the sound of my stereo....unwanted for me.   I've not used a dust cover for years....occasionally dust the equipment, the floors, the blinds, etc.   Everyone should do as they wish