How to get rid of yellow jackets

Yellow jackets nest underground or in wall voids and can have thousands of workers by late summer. Ground nest treatment is doable for an experienced DIYer with the right dust — apply at full dark, do not plug the entrance immediately. Nests inside walls are a pro job.

Difficulty: Medium Time: 15 min treatment + 48 hr check Cost: $15–250
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Wall-void nests need a proNever seal a yellowjacket entrance into a wall — they will chew through drywall into the house. Wall-void treatment requires specific application equipment and experience. Call a pro.

Tools

Materials

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Steps

  1. 1

    Locate the entrance during daylight

    Watch workers entering and exiting in late afternoon. Mark the exact entrance with a small stake or stone 2 feet away — you'll need to find it in the dark.

  2. 2

    Wait until full dark

    Yellow jackets stop flying at dusk and most return to the nest. Treat between 10pm and 4am. Use only a red-filtered flashlight.

  3. 3

    Puff dust into the entrance

    Stand back at arm's length. Puff 3–5 strong shots of dust directly into the entrance hole. Workers carry the dust deeper into the nest as they walk through it — this is why dust beats spray.

  4. 4

    Do NOT plug the entrance immediately

    Counterintuitive but critical — leave the entrance open. Workers leaving and returning carry dust to every corner. Plugging the hole traps the colony but doesn't kill them fast enough; some chew out a new exit.

  5. 5

    Walk calmly away and stay back for 48 hours

    Don't return to inspect. Stay 20+ feet from the entrance for 48 hours.

  6. 6

    Check activity at 48 hours and re-treat if needed

    If you still see foragers entering or exiting, apply a second dose at the next full-dark window. Most nests are 90%+ dead after one treatment.

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