red dot finder worries

[The Warthog]

I get mine from The Source, (formerly Radio Shack) who have a two year replacement guarantee if it wears out, and will replace the batteries up to three times. I use up the guarantee. My only problem with my RDFs is that I don't find them all that transparent, and I wondering about cleaning them. I think I'll try lens fluid. At $19.95 for the finder, I can risk damaging it.

Answering my own question, I took my lens pen to the screen on the RDF yesterday. It cleaned them up nicely, leaving the view through the screen much brighter.