Bald Faced hornets

Bald-faced hornet appearance & geography

Bald-faced hornets generally grow to a little over ½” in length in adulthood, while the queen grows much larger (nearing a full inch.) Like most other wasps, they have a long, pinched body and a triangular upper mid-abdomen. They also have six legs and two antennae. As mentioned, bald-faced hornets have a unique and striking coloring that sets them apart from other yellowjackets. Predominantly black in color, bald-faced hornets (as their name suggests) have mostly white faces along with white spotting throughout their abdomen and white striped “tails.” This unconventional pattern is where many of the bald-faced hornet's other pseudonyms come from – ie. white-tailed hornet and blackjacket. 

Geographically, bald-faced hornets can be found throughout most of the United States as well as Canada. While more common in the southeastern part of the US, bald-faced hornets are known to live on the west coast, throughout the Rockies, and are prevalent on the east coast, as well. Unfortunately, this means nearly anyone is at risk of encountering a bald-faced hornet – or worse, having a colony of bald-faced hornets take up residence in or around their home!

BALd-FACED Hornet Behavior

It’s important to understand that while bald-faced hornets don’t closely resemble yellowjackets, their behaviors are very much alike. Like yellowjackets, bald-faced hornets are extremely territorial and will not hesitate to sting anyone who ventures too close. They have the ability to sting multiple times and do not lose their stinger. This poses a particularly dangerous situation to those who unknowingly agitate a bald-faced hornet as even close proximity to the hornet’s nest will be perceived as a threat. In addition, it makes safe removal of a bald-faced hornet’s nest nearly impossible without the help of professional pest control. 

Bald-faced hornet stings are extremely painful, and the venom can trigger pain receptors causing inflammation and for some, allergic reactions. If you are stung by a bald-faced hornet and are concerned about a reaction, please contact your doctor immediately. 

It should also be noted that the bald-faced hornet’s aggression does not end at adults trying to remove unwanted nests – in fact, they will sting anyone (or anything) that they perceive as a threat. This includes unsuspecting children who accidentally wander near a nest, or pets who find themselves in the wrong place. Cats or dogs who spend any amount of time outdoors during the summer are equally at risk of a bald-faced hornet’s sting.

If your pet has been stung by a bald-faced hornet or other stinging insects, we strongly encourage you to contact a trusted vet as soon as possible. 

WHERE DO HORNETS BUILD nests? 

Bald-faced hornets are social insects and are active during the day. You may be able to track down their nest by simply watching where they buzz around, but they also tend to nest in some predictable spots. Bald-faced hornets often build nests in high-reaching places where they feel most protected from predators and the elements. Generally at least three feet or more above the ground, some common nesting locations include in tree hollows, dense bushes or shrubs, along fence crevices, in sheds, under outdoor lights, or even under eaves of buildings (including homes!) Unfortunately, these hard-to-reach locations often make DIY nest removal exceptionally difficult for homeowners. This is especially true when you consider that a single nest can contain up to 400 worker hornets!

You can spot a bald-faced hornet’s nest by their large, oblong shape and paper-like construction. Bald-faced hornet’s nests are often shaped much like footballs and can grow as large as 3 feet across as the colony population expands. The nests are made of chewed-up bark or rotting wood – when masticated and mixed with the hornet’s saliva, a wood paste is made and used to form the nest. This gives the nests a brittle, almost papier mâché-like appearance on the outside. By design, it’s likely you won't be able to see the comb-like structure beneath the wood pulp exterior, which serves as protection for those within the nest. 

Please be aware that even as summer comes to an end, it doesn’t mean bald-faced hornet concerns disappear. As the weather begins to cool, bald-faced hornet Queens will seek a warm, comfortable place to overwinter. Personal residences and homes are often targets for Queen hornets due to their consistent mild temperatures and safely from the elements. If you do not resolve a bald-faced hornet problem near your home during the summer, it’s possible the Queen may not venture far when winter approaches. Your home may be the nearest, most comfortable place to reside during the cold season.

Can i remove a hornet's nest myself?

If the 400 territorial worker hornets residing within the nest aren’t enough to make you reconsider, you may wonder why you can’t just remove the nest yourself. The reality is, you may be able to knock the nest down on your own, but the likelihood of doing so without causing you or your family harm is very slim. Bald-faced hornet removal is tricky to do yourself and it’s unlikely you’ll be able to do so without being stung. Here’s why:

• At-home sprays have limited spraying distance. You’ll probably want to attempt to kill the hornets from a great distance for safety reasons. Unfortunately, off-the-shelf sprays rarely provide the spraying distance needed to safely eliminate the hornets. It can also be incredibly difficult to maintain accurate aim when spraying from afar, even if you do find a can that can close the 25+ foot gap you need. 

• Slow or weak spraying power. Some sprays may claim they have the force to knock down nests from afar or kill on contact, but this isn’t necessarily the case. Even if you knock down the nest, you’ll still have up to 400 angry hornets coming your way. And even if your spray makes contact with the hornets, they can often live long enough to fly a short distance to attack their target. 
• Sprays don’t make it inside the nest. Making contact with the exterior of the nest alone isn’t enough to solve the problem. In reality, you’ll need to spray inside the nest to reach the bald-faced hornets and (hopefully) eliminate them. Your spray may be effective in killing “on contact” but spraying into a nest at a distance is a difficult feat. Even worse, if you miss and hit the outside of the nest, you may antagonize the hornets and send them after you. 

In general, DIY bald-faced hornet removal is a bad idea for those who would prefer to not be stung. At best, you get rid of the nest and kill a few hornets but suffer a bald-faced hornet attack by the survivors. At worst, you don’t even knock down the nest or kill any hornets and still get stung by aggressive bald-faced hornets. We don’t like those odds. Do you?

who can remove a bald-faced hornet's nest?

The absolute best solution for dealing with bald-faced hornets is to contact an experienced pest professional to safely remove and eliminate the hornets. EcoShield offers as-needed bald-faced hornet removal services to those who are experiencing a one-time infestation, but we also offer stinging insect prevention and removal in our Home Shield Protection Plan. Our highly trained and experienced pest technicians have the necessary protective equipment and expertise to remove bald-faced hornet nests safely.

Frequently asked questions