While reading another RV website (can't remember which one), it was mentioned using Deep Woods Off with Deet on a rag cleared the headlights right up, followed with 303 protectant.
I thought what do I have to lose? I was thinking about ordering new one's anyway. I went out and tried it, amazing, very easy to do, a couple minutes of rubbing and they looked like new. So easy, but makes me wonder what we are putting on our skin.
I was careful not to get it on any paint, and still have to buy the 303 protectant that helps it stay nice longer.