It certainly wasn’t any EPA-approved insecticide.
The Baltimore Sun reports:
The combined fury of Hurricane Irene and Tropical Storm Lee may have drowned much of the region’s stink bug population, but scientists are still hesitant to say that homeowners will see fewer of them when the weather warms.
Scientists say something caused a substantial decline in the number of the bugs last fall before they hunkered down in the region’s attics and closets. Perhaps it was due to natural predators or an unknown parasite. Just as likely, they say, it was the deluge that began just before Labor Day and lasted through September.
“We suspect it was heavy rain because of the regional effect on them,” said Tracy Leskey, research entomologist for the U.S. Department of Agriculture. “The population is substantially lower, but we don’t know the reason definitely”…