Good luck getting rid of them - but can I add a caution about using mothballs?
I'm a biologist and work with a large insect collection. Traditionally, we used naphthalene (the primary ingredient in mothballs) in the cabinets to deter pests, but in the recent past we've had to remove all naphthalene because of its presumed carcinogenic effects.
My workplace smells like mothballs regardless of whether we removed it from the cabinets, because it's been used here for decades. I don't smell it anymore, but it's very pervasive, not to mention potentially toxic. We regularly conduct air quality tests to make sure we're under certain limits.
If there are alternate methods, I'd be using those instead of mothballs.
[SIZE=1]Michelle & family
[COLOR=Blue] 2005 28' International CCD