Our entomologist told us to process in our -20 degree freezer in the
following cycle:

2 weeks in
1 week out
2 weeks in

He says that should cover all stages of the dermestid.  However, if we
wanted to be extra cautious, to do another 1 week out and 2 weeks in.
We don't have to do this often, but when we do we normally just do the
2/1/2 cycle.

Jill K. Harris
Registrar
Virginia Museum of Natural History
21 Starling Avenue
Martinsville, VA 24112
[log in to unmask]


-----Original Message-----
From: Museum discussion list [mailto:[log in to unmask]] On
Behalf Of George Harris
Sent: Tuesday, July 10, 2007 4:14 PM
To: [log in to unmask]
Subject: [MUSEUM-L] Drestmid killing schedule

Hi,
We have some objects that are being treated for drestmid infestations. 
They have been in a freezor for over two weeks.  The previous
collections
manager said that they should now be taken out for two weeks to allow
any
existing eggs to hatch (because they are not affected by the cold) and
then the objects put back in the freezor for two weeks to kill newly
hatched bugs.  Then if we felt it was necessary repeat the process
again. 
The current collections manager said that where she worked before they
only froze objects for one week and that was it and that was supposed to
kill all the bugs and any eggs.  What is the correct way for doing this?

Thank you.

Beau Harris
Registrar
Fairbanks Museum and Planetarium
1302 Main Street
St. Johnsbury, VT 05819

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