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ASIAN BEETLES - Info, Advice & Help

Managing Invasive Asian Lady Beetles in Ontario: Identification & Prevention

Quick Facts About Asian Beetles

  • Often mistaken for native ladybugs but more aggressive and invasive.

  • Common in Ontario, especially in rural or wooded areas.

  • Seek shelter in homes and buildings during fall to overwinter.

  • Can emit a foul odor and yellowish fluid when disturbed or crushed.

Common Signs of an Asian Beetle Issue

  • Large groups of beetles gathering on sunny walls, windows, or siding in fall.

  • Bugs entering through vents, cracks, or loose window frames.

  • Beetles emerging indoors during winter or early spring.

  • Yellowish stains or unpleasant odor from crushed beetles on walls or fabrics.

Prevention Tips

  • Seal exterior cracks, gaps, and window frames with caulk or weatherstripping.

  • Install door sweeps and repair screens to block entry.

  • Vacuum beetles indoors—avoid squashing them to prevent stains.

  • Consider removing outdoor light sources that attract insects.

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When to Call a Professional

  • Beetles are appearing indoors year after year.

  • DIY sealing hasn’t prevented overwintering entry.

  • You notice large clusters on your home, cottage, or business in fall.

  • You want preventative treatment to avoid seasonal infestations.

How PPM Pest Control Can Help

  • Exterior inspections to find entry points and vulnerable areas.

  • Timed treatments during peak fall activity to prevent entry.

  • Use of eco-conscious products safe for homes and pets.

  • Follow-up support for lasting control of overwintering pests.

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