Cassette deck cleaning

thanks for the help; found someone on amazon that i can purchase both bottles from. since the shipping charges are the same if purchase one bottle or two there is no need to purchase one bottle locally. going to hold off on the demag unit for a while to see how much i use the cassette deck.

Well, If you don't demag first, be prepared to have anything you play permanently changed. The exception to this is "Metal" tapes. What made metal cassettes popular is they require a much stronger electrical signal to record and, consequently, they require a stronger signal to erase.
This makes them resistant to passive erasure.
Good luck!

99% isopropyl on the heads, denatured alcohol on the pinch rollers....been doing this for 38 years on my Aiwa AD f770, still works as new. My machine automatically demagnetizes the heads upon start up.