What to do about boxelder bugs in Minnesota

How they get there: Boxelders, as well as lady beetles and stink bugs, find little cracks and get into your walls, where they lie dormant all winter before coming out when temperatures warm in February and March.

The intrigue: Researchers don't monitor boxelder populations, but there are accounts from the hot and dry years of the Dust Bowl when they were out in bigger numbers, said Marissa Schuh, integrated pest management educator for the University of Minnesota extension.

What they're saying: Rainbow Pest Experts general manager Matt Ferguson said the first step is to fill cracks and holes in your home to prevent them from getting in, though that can be difficult because the bugs can fit into a crack about the size of six pieces of paper stacked.

• There are spray treatments you can buy at a hardware store, but Ferguson said a professional treatment will be more effective, last longer and can get hard-to-reach places.

• Those treatments will prevent boxelder bugs as well as lady beetle and stink bugs.

The other side: Schuh suggested that customers ask pest control companies what affects the treatments have on pets, kids and pollinators.

• "It's not a decision to take lightly."