Over the last couple months I've seen SHB steadily increasing in my two hives. Lately I would see a dozen or so scurring about the top bars of the top box and under the inner cover. So I finally break down and buy 10 Better Beetle Blasters. I open the hives to install them and between the two hives I see a grand total of 1. Uno.
Its been getting down into the low 50's and mid 40's at night here for the last couple weeks so.... maybe low temps are as effective if not more than traps.