Bald-faced hornets are large, aggressive wasps. Learn more about the signs of bald-faced hornets, health risks, what to do if you have them, and more.

Bald-faced hornets are about 5/8 to ¾ inches long with white faces and black and white bodies. They build the light gray, cone- or egg-shaped nests with a hole in the bottom.

A large bald-faced hornet’s nest is attached to our house very close to a grill. (Tim Johnson / Chicago Botanic Garden) By Tim Johnson. PUBLISHED: September 29, 2024 at 5:00 AM CDT.

Bald-faced hornets are around three-quarters of an inch long, with black bodies and gray bands. Their nests are typically large and enclosed, containing over 100 hornets inside.

Don't let wasps ruin your outdoor time. Here’s what to do if you see wasps in or around your home and how to keep wasps away ...

Bald-faced hornet colonies are at their largest size this time of year, with upwards of 500 workers in each nest, said Zack, adding that there’s an uptick in numbers this September.

Because bald-faced hornet nests are so large, and it’s not likely you can spray into them, you’ll need to call in a professional to get rid of this wasp’s nest. JossK - Getty Images ...