Thread: Recommendations on scope flip covers...

Originally Posted by canross

Rainx water repellent glass spray works well. Only thing is if the lens has an external coating you'll be rubbing it, and some coatings aren't super strong... but if you've ever cleaned your lenses you have nothing to lose, and it works great for water repellency.

I'm pretty sure Rain x is alcohol based so it's going to ruin any existing lens treatment if you use it, but if the scope doesn't have any to begin with then nothing to lose haha. I learnt the hard way when I was young that scope coatings don't agree with window cleaner lol