Understanding Asian Beetles: Insights and Solutions

Learn About Their Behavior, and How to Prevent Infestations with Expert Tips from Downriver Pest Control

TOP FACTS ABOUT ASIAN BEETLES

  • 1. They’re Not Native to North America

    Asian beetles, also known as Asian lady beetles or multicolored Asian ladybugs, were first introduced to North America in the 1900s as a form of natural pest control. Originally from Asia, they were used to reduce aphid populations in crops.

  • 2. They Seek Warmth in Large Numbers

    As temperatures drop in the fall, Asian beetles look for warm places to overwinter, often making their way inside homes. They tend to gather in large numbers, sometimes forming swarms on sunny walls or windowsills.

  • 3. Asian Beetles Can Bite

    Although they don’t cause serious harm, Asian beetles can bite humans if they feel threatened. The bites are typically mild, causing slight discomfort but not significant pain or health issues.

  • 4. They Release a Yellowish, Foul-Smelling Fluid

    When disturbed or threatened, Asian beetles release a yellowish fluid called reflex blood from their leg joints. This fluid smells unpleasant and can stain walls, fabrics, and furniture, making them a nuisance indoors.

  • 5. They Can Be Harmful to Pets

    If pets, particularly dogs, ingest large numbers of Asian beetles, it can cause irritation to their mouths and digestive systems. This is due to the beetles’ reflex blood, which is mildly toxic to pets.

  • 6. They Are Resilient and Can Survive Harsh Conditions

    Asian beetles are extremely hardy, able to survive cold temperatures and other tough conditions, which has allowed them to spread rapidly across North America since their introduction.

Effective Strategies to Prevent Infestations

Keep Asian Beetles Out

Seal Entry Points

  • Caulk Cracks & Gaps: Inspect your home's exterior for any small cracks or openings around doors, windows, vents, and utility lines. Use caulk to seal these areas to block entry.
  • Check Door & Window Screens: Ensure all screens are intact and repair any tears. Use fine mesh screens to prevent Asian beetles from slipping through.
  • Install Weatherstripping: Add weatherstripping around doors and windows to seal gaps where beetles might enter.

Reduce Outdoor Lighting

  • Switch to Yellow Bulbs: Asian beetles are attracted to bright lights, so consider using yellow “bug lights” on your porch, which are less attractive to them.
  • Turn Off Lights When Not in Use: Minimize outdoor lighting in the evenings, especially near doors and windows, to reduce the attraction.

Keep Your Home Clean

  • Vacuum Regularly: Asian beetles are attracted to food particles, dust, and debris. Regular vacuuming can remove potential attractants and help prevent them from settling inside.
  • Remove Food Sources: Store pet food, pantry items, and dry goods in airtight containers to keep beetles and other pests from being attracted to them.

Limit Access to Your Attic and Basement

  • Close Off Unused Rooms: Beetles tend to overwinter in attics, basements, and closets. Keep these areas closed off when not in use.
  • Declutter: Beetles prefer undisturbed spaces, so keep areas organized and decluttered to reduce hiding spots.
Contact Today

Asian Beetles can be a huge annoyance but you don’t have to face them alone.

At Downriver Pest Control, we offer expert solutions to keep your home and yard mosquito free. Contact us today for a personalized plan.

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