The weather, of late, has been perfect for mosquitoes, so you need to be a little careful when using bug dope around optical instruments. Be especially careful with insect repellents that contain DEET. DEET makes a great paint and finish remover - I learned this many years ago the hard way with a nice
binocular. If you must use an insect repellent with DEET, take care around a
binocular,
spotting scope,
telescope or other optical instrument. It's nasty stuff. That's why it works so well on insects, I suppose.
Although they don't work as well against mosquitoes, natural repellents, such as Skin So Soft and some of the new plant based repellents are much easier on that binocular,
telescope or
spotting scope. I think they smell better, too.