Contact cleaners/What's good?

PS: Iso-propyl Alcohol is widely used in industry as a solvent, so it will definitely remove the major grunge on dirty equipment, but definitely not a good choice for tweeking important connections on your system.

Pro gold works well for me.

Dave, here is link to Galen Carol Audio discussion on cleaning products and how to best clean connections. He also recommends Kontak after trying many others. BTW I have used Kontak for many years, and have heard nothing that improves sound to the same degree.

Galen Carol discussion, http://www.gcaudio.com/Archives/howto.html

I recently used Iso alcohol to clean a noisy connection on my amp's selector pot and it worked fine and eliminated the static. I found the info in an old thread at this site. My main concern (other than being mental) is pollution in the LA area that noticeably coats everything within a manner of weeks (we do not use AC and keep the windows open a lot even during the winter). If I take a tea pot or dish out of a closed cupboard and run my finger over it the pollution grunge will make a streak and as I said before it accumulates very quickly. I cover my seldom used connections with tin foil in the hope that corrosion will not take place (probably should pick up the cheap caps made for this purpose but never seem to get around to it). From the comments so far I may try the Kontact as to try something new this time round and may just try plain denatured alcohol on the tube sockets as I can see no risk in this. I had not even thought about petrol products being used in some of the preservatives, but realize that they must leave something behind in order to offer protection. Thanks. PS: I now have one negative vote, I wonder who the little ahole was?:-)