08/31/2026
Ant Control — "How long does a professional ant treatment actually last?" — answered honestly.
The Colony Elimination:
Non-repellent treatments that reach and eliminate the queen are permanent for that specific colony. Once the queen is gone and workers are eliminated, that colony doesn't rebuild.
Entry Point Sealing:
Sealed access points hold indefinitely — unless physical changes to the home create new gaps.
What Causes Re-Infestation:
A new, separate colony finding an unsealed access point. Not the same colony returning — a different one finding new access.
What Shortens Treatment Longevity:
- Entry points that weren't identified and sealed
- Moisture conditions that weren't addressed
- Landscape changes after treatment that create new scout attractants
The Realistic Expectation:
A properly executed treatment with full entry point sealing holds for a full season minimum — and most of our Lake Oswego and West Linn clients don't call back for the same problem.
Learn more: https://thekillers.net/ant-removal-lake-oswego-or/
See what Portland homeowners are saying:
https://maps.app.goo.gl/qLG4nL42ShtNEF4e6