pledge or 210

[Rotorhead]

Rainex works wonders, but be careful, it does etch some plastics. We use it on the glass windows and it is worth its weight in gold.

A little work in involved, but Rain Dance car wax is great as well. It is a blue coloured wax I initially used on fixed wing.

As for the paper, avoid using dry paper on plastic windows, you might as well use fine sandpaper because that is what the result will be. I was staying in a motel one time and asked for an old cotton towel to do the windows with. They had five garbage bags full of stained white cotton towels (coffee stains do not come out easy) and gave me two bags for free. Well we were a good customer and that always helps.

It never hurts to ask...

 

[graunch1]

If you can still find it there was a product on the market for car-detailing called Dry Wash,n Guard.It was one of these Amway type persoanl sales companies.
It is a non-silicone cleaner polisher that is used for cleaning cars even wiping up the dirt directly off the car's finish

.
It really does take dirt off without scratchng. I won't use it that way on windows etc but on clean glass or plexiglas it puts on a very slick, distortion-free finish that bugs don't stick to and water just beads off. Much better than Rainex or it's new verion (made in France). The tire cleaning stuff that comes with this kit is great for taking bugs off the airframe. One little squirt and they literally dissolve in front of your eyes.
And for those that care....the cleaner-glaze meets Boeing's spec for a/c cleaning material