Answer

Dear mlberry:

   I know that pesky buildup can cause "severe frustration" after repeated attempts of removal. I can personally relate as I had a like situation to go through just recently.
A friend of mine gave me a sure fire way to get the job done, and efficiently!

Try the following and let me know how it works for you.

Mix:
1/2 cup of pure Amonia
1 pint of isopropyl alcohol
1 Teaspoon dishwashing detergent (oxy powered brand if possible) (preferably by "palmolive")
and then add enough water to make one full gallon.
Add this solution to a spray bottle, and be sure to lable the product as a "DANGEROUS CHEMICAL" for saftey reasons.
Dampen the windows and let them soak for about 10 minutes. Then gently wipe with a lint-free cloth, (paper towels would work fine), and you might have to use the solution a few times; repeating the process in layers until all goop is gone!

I surely hope this helps you as it did for me!

Good Luck, I wish you the best!

Expert:	Cheryl
Pos. Feedback:	100.0 %
Accepts:
Answered:	1/8/2005

Handywoman

General ,Electrical, & Crafting knowledge.