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Old July 8, 2017   #19
bower's Avatar
Join Date: Feb 2012
Location: Newfoundland, Canada
Posts: 5,959

I have some yellow ones I got at the dollar store for using indoors and in the greenhouse. Sad to say last year I put one in the greenhouse and the first thing I caught was a parasitoid wasp. I was only expecting a few fungus gnats or other tiny pests at the time. It was not a very small wasp either, but it sure stuck fast.

The truth is, a lot of bees are tiny and so are many beneficial wasps, ladybeetles etc. The stickies are a broad spectrum trap for anything small enough, even though bigger bees and other critters may escape the best quality products.

So weigh your options, it may still be your best choice, and if so, place them where you will get most pest and least beneficials.
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