Are Asian Lady Beetles Harmful?

When you first see an Asian lady beetle, you might mistake it for the beloved ladybug. With their orange-red shells and black spots, these lookalike insects often appear cute and harmless, but looks can be deceiving. While they don’t pose the same kind of danger as stinging pests or wood-destroying insects, Asian lady beetles can still cause problems for homeowners across New Jersey, Pennsylvania, Delaware, and the Eastern Shore of Maryland.

Here’s what you need to know about these invasive beetles, the risks they pose, and how Viking Pest Control can help you keep them out of your home.

What Are Asian Lady Beetles?

Asian lady beetles (Harmonia axyridis) are an invasive species. They were first introduced to the United States in the 1900s to control agricultural pests like aphids. Over time, their population spread rapidly.

They’re often confused with native ladybugs, but there are key differences:

• Color: Asian lady beetles range from orange to red, while ladybugs tend to be a deeper red.
• Marking: Many Asian lady beetles have a small black “M” shape behind their heads.
• Behavior: Unlike native ladybugs, these beetles often gather indoors in large numbers to overwinter and can be aggressive.

Are Asian Lady Beetles Dangerous to Humans or Pets?

Asian lady beetles aren’t known to spread disease, but they can still be a nuisance and even a mild health concern in some cases.

Here’s how they can cause problems:

• Biting: While rare, Asian lady beetles can pinch skin when threatened. Their bite isn’t venomous but can be irritating.
• Allergies: Some people experience allergic reactions from contact with the beetles or their secretions, leading to itchy eyes, sneezing, or respiratory irritation.
• Odor and Stains: When disturbed, Asian lady beetles release a yellowish fluid with a strong odor that can stain walls, curtains, and furniture.
• Pet Concerns: There have been isolated cases where beetles attached to pets’ mouths or gums, causing discomfort. While uncommon, it’s another reason to keep infestations under control.

Why Are They in Your Home?

Asian lady beetles seek warmth and shelter as temperatures drop in the fall. They often enter through tiny cracks around windows, doors, siding, or attic vents, clustering together in wall voids or hidden corners to hibernate through the winter. Once inside, they can reappear in large numbers on warm days, especially near windows and ceilings.

How to Prevent Asian Lady Beetle Infestations

The best way to handle Asian lady beetles is to stop them before they get inside. Prevention and exclusion are key.

Follow these steps to keep them out:

1. Seal entry points: Use caulk or weatherstripping around doors, windows, and siding gaps.
2. Repair screens: Ensure window and door screens fit tightly with no holes.
3. Install door sweeps: A simple barrier at the base of doors helps block beetles from sneaking in.
4. Vacuum, don’t crush: If they’re already indoors, gently vacuum them up instead of squishing them to avoid stains and odors.
5. Schedule professional pest control: Expert treatments can create a protective barrier around your home to deter overwintering pests like Asian lady beetles.

Viking Pest Control: Your Local Expert for Fall Invaders

If Asian lady beetles have taken over your home, Viking Pest Control has the solution. Our team uses safe, targeted treatments designed to keep overwintering pests like lady beetles, stink bugs, and cluster flies out of your living spaces.

We provide year-round protection with our SMART Pest Control Program, combining prevention, monitoring, and eco-friendly solutions tailored to your home.

Don’t let Asian lady beetles take over your home this fall.

Call Viking Pest Control at 800-618-2847 or request a free estimate online today.