DIY methods may work best with this crop-eating pest. And these same tactics can be used to help control Asian Lady Beetles too!
The brown marmorated stink bug: It feasts on the bounty of summer as it ripens, from raspberries to peaches to apples.
It eats through husks to reach the succulent nibs of sweet corn and pierces the pods of soybeans, leaving behind shriveled seeds. As fall approaches, it seeks refuge in our homes, unleashing the “ick!” factor when it unexpectedly drops from our ceilings.
Squash one and an odor that some people find unpleasant tells you how it got its name.
Native to China, the six-legged, triangle-shaped bug first appeared in North America in 2001, likely after hitching a ride in boxes or packages. They love to nestle into tight spaces, like corrugated cardboard.
“With few natural predators, the stink bug has spread quickly, posing a significant threat to fruit, vegetable and nut crops, particularly in the mid-Atlantic region.”
Celeste Welty, an entomologist at The Ohio State University, is among a team of more than 50 researchers in 15 states who are working on ways to manage the smelly bugs, preferably through natural methods, and contain its disastrous effects on the farming community.
Welty’s current research focuses on the search for a tiny wasp that is a natural predator of stink bug eggs. The wasp has been found in West Virginia and Pennsylvania, but not yet in Ohio.
While stink bugs can devastate crops, they don’t pose a threat to humans — they don’t bite or sting or carry disease. Still, their presence in our homes can be a nuisance. Welty offers these tips for showing these unwelcome guests the door.
Five ways to rid your home of stinkbugs:
- Prevent them from entering in the first place.
“We really do emphasize prevention, particularly right around early September. That’s when they typically start invading the homes,” Welty said. “It’s not so much that the weather’s getting cooler, but that the days are getting shorter. It’s programmed into their biology to seek a protected place.”
Use silicone or silicone-latex caulk to seal cracks and crevices around doors, windows, chimneys, utility pipes, fascia and other areas. Remove window air conditioners, which are particularly attractive to stink bugs because of the narrow vents. Fix broken screens and windows.
- Vacuum them up.
Use a utility vacuum like a Shop-Vac or use a household vacuum that has a bag, and empty the vacuum right away to prevent the odor from remaining.
- Startle and collect them.
Stink bugs tend to go for the highest point in a house, congregating on ceilings or high up on a wall or window. They fall straight down when startled.
Startle them, with a broom handle, for example, and collect them in a container as they fall. Collected bugs can be put in a plastic bag that is sealed and disposed in the trash.
- Create an indoor trap.
A colleague at another university created a homemade trap with a disposable aluminum pan (like the kind used for lasagna), soapy water and a lamp positioned over the pan.
The bugs are attracted to the reflective surface; the soap breaks the surface tension so they don’t float but instead meet their demise by drowning. While unfriendly to stink bugs, it is a pesticide-free option.
- Call an exterminator.
Some people find it helpful to have an exterminator spray around windows and doors outside. Welty’s scientific advice: “There’s no evidence that spraying indoors helps at all, but it might help if you spray around the window frames and door frames on the outside. The key is to block those entryways.”
This article was originally published in the July 2017 edition of Ohio State Insights under the category “Sustainability”.
For more information about annoying home invaders, consult your County Extension Educator.