Pest Control Technician how-to

How to Seal Rodent Entry Points

Exclusion is the most lasting rodent control.

Updated By the Career Education Institute Curriculum Team
Quick answer

Exclusion is the most lasting rodent control. In short: inspect; check; pack, then complete the remaining steps below.

Step by step

  1. Inspect the exterior for gaps larger than a quarter inch.

  2. Check utility penetrations, vents, doors and the roofline.

  3. Pack gaps with steel wool or copper mesh.

  4. Seal with sealant, mortar or metal flashing.

  5. Install door sweeps where needed.

  6. Document all sealed points.

Safety reminders for pest control technicians

  • Wear label-required PPE and wash after applications
  • Store and transport pesticides securely
  • Watch for hazards in crawl spaces and attics
  • Keep products away from children, pets and food

IPM · Label · Restricted use pesticide · Bait station · Exclusion · Harborage: see the full pest control technician glossary.

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