How to get rid of Stink Bugs: Make a garlic spray. Mix 2 cups (500 ml) water with 4 tsp (20 ml) garlic powder in a spray bottle. Spray this solution onto plant leaves, windowsills, and other areas stink bugs frequent.
• Stink bugs have a shieldlike shape with a large triangular area between the leathery portions of the front wings (scutellum) and five-segmented antennae. Telling the good guys (predators) from the bad guys (plant feeders), however, is not always easy. A simple rule of thumb is that green stink bugs are most often plant feeders, while brown or gray stink bugs are more likely to be predators. Actually, some brown or grey stink bugs are plant feeders, but are somewhat less common.
Stink bugs: At some garden supply sites you will find yellow sticky traps for stink bugs and pheromone impregnated traps to lure them in. Don't plant sunflowers near your garden as stink bugs are highly attracted to them. Make your own spray crush up about 10 cigarettes in a half gallon of water and let it sit over night. Strain the solution through some cheesecloth saving the liquid and adding a teaspoon of dish soap to it. This can be sprayed on plants and it will kill stink bugs quickly.