I found that keeping old glass salt shakers with a piece of dog flea collar in each of the containers I keep my fly tying materials in helps kill bugs and keeps others from attacking my material. The salt shakers only cost about 1 dollar and they last forever. The holes in the top of the shakers allow the fumes to get out so that the flea collar can do it work without me having to worry that it is actually touching any of my materials. I've also used this method successfully with moth balls, but the smell of the moth balls gives me a headache so I switched over to flea collar.

Jim Smith