Time: 5 minutes to several months
Stink bugs. Everyone knows 'em, everyone hates 'em, except maybe frogs, birds, and spiders. You might grudgingly accept them in your light bulbs or blinds, but I think I speak for many when I say that the tomatoes and peppers are the last straw. They don't even eat the whole thing; just make sure I can't eat it. While most gardeners tend to whip out the insecticide and drench their plants before they can multiply, you might guess that the Nature Army has their own way of doing things. The first? Companion planting.
Chives, lavender, and marigolds have some kind of chemical that stinkbugs find less than favorable. For the small space gardener, I'd recommend marigolds. You can fit one to four plants in a square foot, but don't do that. Spread them out all over your yard. Put them everywhere: the base of the tree, by the cat door, next to the birdhouse you painted, in the garden, and locking the peppers and tomatoes on all sides. If you feel like it. Lavender and chives are a good addition to the herb garden. I would say the same about chives that I did about marigolds, but if you did that you would have more chives than anyone could possibly eat. (Then again, the flowers aren't half bad.)
If you have no more room left to plant marigolds or chives (lavender gets much bigger), then we've got another trick just for you. (Don't take that personally.) Here's my secret recipe.
Using your environmentally-friendly dish soap, splash a, well, splash into a bowl of water. Soak a stinkbug, Japanese beetle, or other invasive pest into mixture. Repeat.
Tip: Do not watch the insect writhe and squirm as the poisons overtake his/her body. You will not be happy. Also, do not dump the stink bug cup into the yard or in your siblings' shoes. The trash can or woods are a much better place. At least, people don't run around in the trash can with bare feet. I hope.
You can also make stink bug traps out of 2-liter soda bottles. I'm not sure how to do it, but apparently it works.
Stink bugs came from Asia. A ship coming over to America for trade unwittingly had some aboard the ship, and you know the rest. So obviously, the American climate wasn't too harsh on them.
If you want to do this for a Nature Army Initiation Task, it depends on the circumstances. Maybe you could help a farmer that you know plant marigolds so he/she doesn't use much insecticide. You could also help a local organization, such as an animal shelter, get rid of overwintering stink bugs so that they are or appear to be a cleaner, healthier business. Planting marigolds and other ornamental plants around an animal shelter (with permission) would attract people (and butterflies) to the area.
Well, uh, that's it. Don't scowl at my poor closing sentence. It's bad manners.