That is really an ingenious idea for a stink bug trap. We live way out in the woods in Pa and they invade the house late fall
to get inside out of the cold.... they stay indoors all winter until spring and then they are trying to find a way out of the house. crush just one with a paper towel and you will never do that again as you can't get the stink off your fingers.... Listerine wash helps.
The only chemical that helps for about two weeks is "Talstar Pro" but a quick help in the fall
when they are outside trying to get in is a mix of Dawn Regular dish detergent (the blue stuff) and water.... (put enough dawn in the water to give it a blue haze)
I've noticed they are drawn to light
and that link is a very good idea. I have a pest control company (Ehrlich) that does the house and said there is no way they know of to get rid of them....Talstar Pro works for a short while and must be re-applied. These things are spreading like crazy and will not hurt you...... they just stink awful bad when they think they are being attacked.
Good Link.... Thanks,