Foggy Headlight Covers?

I have an '88 Mercury Cougar and my headlight covers are so bad, as far as being cloudy. I can no longer drive at night! I have looked and tried all the things I've heard and read about with no luck. Why if manufacturers make them for the cars, then why can't we buy them when something happens to them? Seems the car companies could stand to win in this situation!

By Lisa S. from Mt.Vernon, WA