I started this at USNM in 1995 after some research. I gave a couple talks at ECN a while ago about freezing. Minus 25C will kill anything we need to worry about. No need to bag
or repeat freeze - cellulose will reabsorb any moisture. But after freezing do leave drawers, etc. out for enough time for them to re-acclimate - don't open them.
We also talk about this in the Entomology Collections Management Workshop.
From: Entomological Collections Network Listserve [[log in to unmask]] on behalf of Brown, Richard [[log in to unmask]] Sent: Tuesday, February 21, 2017 11:01 PM To:[log in to unmask] Subject: freezing drawers for pest control
We are receiving some major donations, some of which have had some dermestid damage. We have regular freezers as well as an ultra-low freezer. Does anybody know of adverse effects of putting drawers of specimens in an ultra-low freezer before the drawer
is brought into museum?