Maintenance Guides / Lawn & Outdoor

Apply exterior pest barrier treatment

Difficulty: easyTime: 45 minsEst. Cost: $20 - $60

Why it matters

Most pest infestations start with entry through cracks, gaps, and foundation penetrations. A perimeter barrier treatment interrupts this before pests establish colonies inside.

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How to do it

  • 1

    Use a concentrated residual insecticide (bifenthrin-based products are common).

  • 2

    Spray a 2-foot band along the base of the exterior walls and 1 foot out on the ground.

  • 3

    Also spray around window frames, door frames, and utility penetrations.

  • 4

    Reapply spring and fall, or after heavy rain.