When you start seeing wasps regularly, especially in the same spots, it often means a nest is nearby. Recognizing the signs of a wasp infestation early gives you the best chance of dealing with it before it becomes a bigger problem.
There are a few key signs that will help you figure out whether you have a wasp’s nest nearby or actually in your home or business.
Seeing wasps regularly around your roofline, eaves, vents, or outdoor trash areas is one of the clearest signs of a nearby wasp infestation. A few here and there is normal; a steady stream is not.
Wasp nests can appear under eaves, in wall voids, inside sheds, or tucked into corners of your porch. Early in the season, they may be no bigger than a golf ball. But by late summer, they can be the size of a basketball.
Yellow jackets and other species commonly nest in wall voids, and the sound of an active colony can carry through into your home.
Finding wasps indoors (especially repeatedly) suggests they're entering through a gap, crack, or vent somewhere nearby and may have established a nest inside.
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Wasps will nest just about anywhere that offers shelter and is close to food. This includes:
If you spot a nest, don't approach it. Wasps are territorial and will defend their colony aggressively if they feel threatened. Our wasp control experts can assess the situation safely.
Spotted a nest? Think before you act, and don’t approach it. Follow these steps instead:
1. Don't disturb the nest: Resist the urge to knock it down, spray it with a hose, or investigate up close. Disturbing a nest, even accidentally, can trigger an aggressive response from the colony.
2. Note where wasps are entering and exiting: If you can safely observe from a distance, take note of where wasps are flying to and from. This information helps our technicians locate the nest quickly during an inspection.
3. Contact Western Exterminator: DIY wasp control is not something we recommend. Without the right protective equipment and knowledge of wasp behavior, attempting to treat a nest yourself can be dangerous.
The most common signs include:
If you're noticing any of these signs, it's worth getting a professional inspection.
Wasps typically enter through small gaps in siding, cracks around window or door frames, unscreened vents, or gaps around utility pipes. They're often searching for food or a sheltered nesting site. Sealing these entry points is an important part of long-term prevention.
Wasps can sting multiple times and will defend their nest aggressively if disturbed. For people with sting allergies, this can be a serious health risk.
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