Mothballs (NAPTHALENE) and Moth Crystals (PARADICHLOROBENZINE) should NOT be
used in this fashion. Take it from a bug-guy. These materials (oh, and also
don't use VAPONA) are very hazardous to your well being. For a lengthy
discussion try the entomo-l archives. We use these things sparingly in
permanently housed bug collections. Prolonged exposure to these may cause a
number of problems.
  Better to live trap the offenders and release in a field somewhere a few
miles down the road (HAWK FOOD).

Barry S. Nichols                 BSNICH01@ULKYVM.LOUISVILLE.EDU
7004 Ethan Allen Way             BSNICH01@ULKYVM
Louisville, KENTUCKY  USA 40272
PH: (502) 583-5835 (machine answers--it may be rather odd)