>Where did you get your trays?
I purchase the ones I use from Heartwood, but several others make them too, so I encourage you to shop around as you might find better pricing or something that is better suited to your particular set-up:
https://eheartwood.com/product/10-frame-plastic-tray-for-beetle-trap/
It is very interesting indeed to study the debris in the bottom board- it can tell you a lot about colony size and status during the overwintering period.
Last year I saw a pseudoscorpion (of Torben Schiffer fame) on the bottom board. That was interesting.
***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software. For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html