Question – I just opened an aluminum fly box with trout flies that I purchased a year ago. It does have vent holes. Five out of fifteen spring compartments had what looked like “dust or micro size particles” and small pieces of hackle fibers from the flies. Some flies had no tails and one “parachute” was half gone in one compartment. It appears that some sort of “bug” ate the flies. I did find one dead “ bug” curled up like a “scud” about 1/16” long. No joke.
Does anyone have an explanation? What can be used to prevent this from happening again? Will moth ball “dust” work?