Cleaning audio components with 90% isopropyl alcohol

I just spit on them and wipe clean with 10ply toilet paper. I find it really enhances the sound. 

You really should get some CRC +1 @toddsyr if you can or Deoxit D5, for contacts and pots and the green F5 for faders plastics etc.

Use Deoxit D5 for initial cleaning, then apply PreservIT P5 to preserve the surfaces. This is an industry standard in recording studios world wide.  

Electronics alcohol is great...the 99% is best second.Mg chem contact cleaner,no residue.Alcohol has a wait time if spray.

Alcohol is NOT the best. I am not saying it is dangerous to use on your equipment but like one mention here that era legit contact cleaners out there. Even 90% leaves a residue which in theory can cause a less than perfect connection.

Contact cleaner is NOT expensive. Take the time to treat your expensive equipment with loving kindness. PLEASE.