Being cheap I can be, but I also like to experiment with cleaners and lubes. I have found that sometimes substituting electronics contact cleaning products with others can work very well but not be completely appropriate. Therefore, I tried Paslode cleaner/degreaser (for power nailers etc.). It's slow evaporating and is on the borderline of affecting the surface of some plastics. However, Paslode is a super effective contact and control cleaner. I found if I cleaned a potentiometer with Paslode, then followed up with Tech Spray Lub-A-Trol, the results were excellent and I have'nt had to re-apply these products since (they also work reliably on tuning condensor leaf spring contacts). All other products I used eventually failed.
Disclaimer:
I will not be responsible for any adverse affects of the above products when not used as the labels instruct. ;)
Dave M.