Date: 2008-07-27 01:12 am (UTC)
ext_39907: The Clydesdale Librarian (Default)
The positioning of the scent patch is apparently important. It has to be high enough on the plastic vane to allow the scent to diffuse, but low enough so that the beetles that blunder into it don't bounce right out of the bag. My instructions said to put it in the bottom 1/3 of the vane, which means it is partly below the edge of the plastic bag. The beetles actually started to show up as soon as I peeled the protective cover off the patch and the scent got loose. There was a large concentration of them just a few feet away, though, which certainly helped. I suppose the effectiveness of the chemical bait wears off with time, too. These may have been nice fresh traps and you may have got one that's been sitting around in the stockroom since last year. I didn't see an expiration date on the box, though.

Or maybe my beetles were just exceptionally horny today. The weather might have something to do with that, temperature, humidity, wind speed.
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