Quote:
Originally Posted by barx1963
I would be extremely careful before going anywhere near any optical surfaces with any sort of fly spray or insecticide. The active ingredient can literally eat optical coatings
Malcolm
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My suggestion was to spray masking tape away from the scope & when dry put on the outside of the OTA tube..Not inside.. also to use a surface spray not fly spray. Surely nobody would be that silly to spray inside their scope..
The idea is to kill spiders to stop them getting in the scope in the first place.