Go to a local detail shop, especially if there is a truck stop around
with a truck wash. I get the TR-1000 for $5.00 per gallon. I use a nice
thick towel and make it a little wet, then spray the soap 50/50 with water
right on the leading edges. It is the best thing I have found so far, using
the pledge before you fly is also a good idea. I use the same towel to wash
my car, all the soap I need is already on the towel.
I tried the pam too, it's way to greasy for me but does work pretty
good. I stayed away from the butter flavor

Wayne
I'm a big fan of Tomar TR-1000. Works great and is safe for
airplanes. The big problem is you probably have to buy it from the
manufacturer, and shipping will increase the cost substantially.