It depends where you are. If you're in the EU the only thing you can do is freeze the drawer. If you're in the US or some other countries you can still get Paradichlorbenzene at most hardware stores, which will kill them.
Post by Adam Cotton on Jul 27, 2020 10:49:00 GMT -8
A 1cm square piece of 'No Pest Strip' (Vapona, contains dichlorvos) in each drawer will kill any beetles inside and keep your specimens safe for several years if the lids are reasonably airtight.
Note, when cutting up vapona strips NEVER use bare hands, wear rubber gloves and thoroughly was the gloves before removing them from your hands, and then wash your hands again afterwards. Dichlorvos can be absorbed directly through the skin, so avoid all direct contact with it. However, the tiny amount of vapour in the air in the room after using it is perfectly safe.
Post by Adam Cotton on Jul 29, 2020 8:22:55 GMT -8
Freeze the drawers individually wrapped in a large plastic bag for 3 days, take them out of the freezer for a week and then freeze them again for another 3 days. Eggs will often not die during the first freeze but after they return to room temperature they will hatch then die in the second freeze.
When you are finished with the cycle take the drawer out of the freezer but DO NOT open the plastic bag until 24 hours afterwards when the drawere will be at room temperature.