Occasional Invaders
Fall Invaders in Lebanon, MO: Lady Asian Beetles & Boxelder Bugs—How to Keep Them Out
| Sep 01, 2025
Why fall = “bugs on the siding”
Warm daytime sun and cool evenings trigger swarming on south/west walls. From there, pests slip into tiny gaps to overwinter in attics and wall voids.
Quick ID Guide
Asian lady beetles vs. native ladybugs
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Asian lady beetle: orange to red; spots vary; often a black “M/W” mark behind the head; clusters in big groups.
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Native ladybug: smaller, bright red with even spots; rarely swarms homes.
Boxelder bugs
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Boxelder bug: black with red/orange lines on wings; congregates on maples/boxelder trees and sunny siding; enters in fall.
Common Entry Points on Homes
Where they squeeze through
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Upper siding/soffit seams; fascia and rake boards
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Attic and ridge vents (coarse screens)
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Gaps at utility lines, cable/AC penetrations, meter boxes
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Window/door casings, weep holes, foundation/top-plate gaps
Prevention That Works (Do this before first cold snap)
Exclusion + targeted exterior protection
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Seal with quality caulk/foam at trim, utility holes, and siding transitions.
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Add fine mesh to attic/soffit vents; repair screens/weather-stripping.
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Reduce exterior night lighting or switch to warmer color temps.
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Schedule a perimeter/upper-story treatment on sun-exposed walls to intercept migrants.
Why DIY Sprays Often Disappoint
Timing and placement beat blanket spraying
Lower-wall sprays miss attic/soffit seams and can stain. Correct products and upper-elevation application are key.
Our Fall Invader Program (Lebanon)
Stop them before they get inside
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Exterior inspection to map hot sides (south/west) and entry seams
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Targeted treatment to soffits, eaves, siding joints, vents, and penetrations
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Exclusion checklist you can tackle the same week
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Optional mid-winter follow-up if warm spells trigger indoor sightings
Service Area & Best Timing
Book early for best results
We serve Lebanon and nearby Laclede County communities. Best window: late summer through early fall before the first hard frost.
