I will hardly call myself an expert on clothes moths, but I do know more about them now than I did a year ago.
Unlike other types of moths, clothes moths like the dark. They will actually flee from the lights and try and hide under something.
So no bug zappers.
It is also the larval stage that does the damage. The adults don't have mouths that are able to chew.
As for mothballs, I hate the smell of them. It stays with the fabric forever and anytime it gets damp, you smell that lovely mothball smell once again. The container into which the mothballs are put need to be air tight also otherwise the the vapours slowly dissipates and may slow the larva down, but not kill it. Death of all stages is what we are aiming for.
There are two types of moths that do damage to fibers. The web making moth and the case making moth. At the school I had the web making moths. Here, I have the case making moths.
Both kind lay eggs which hatch in under two weeks. The larval stage can last as little as 40 days or as long as 2 years. And it is here that the insect does the damage. Both kinds of moths like the dark and quite and so are mostly found in things that are being stored as opposed to things that are being used regularly. The case making moth will spin a case for itself as soon as it emerges from the egg and it builds upon this as it eats. The colour of the fiber that it eats will be spun into its cocoon and so acts as camouflage. The larva have most of its body in the cocoon and have their head and few front feet out of the cocoon and so can move around. Apparently you can sometimes find them crawling up the closet wall. A pleasure that I have thankfully not had.
For more information, you can look here.