To kill yellow jackets effectively and safely, follow these expert-recommended methods:

1. Locate the Nest

• Identify the yellow jacket nest during the day by observing where workers enter and exit. Mark the entry points.
• Nests can be above ground (in trees, eaves) or underground (small holes in the ground).

2. Timing for Treatment

• Treat nests at night or early morning when yellow jackets are less active and inside the nest. This reduces the risk of stings and increases effectiveness.

3. Methods to Kill Yellow Jackets

Aerosol Insecticides (Freezing Sprays)

• Use aerosol sprays designed to freeze yellow jackets, such as pyrethrum aerosols (e.g., Stryker 54 Contact Aerosol or PT 565).
• Spray directly into the nest entrance to kill the colony rapidly.
• Wait for the spray to dry, then apply insecticidal dust to prevent re-infestation.
• Pros: Fast, effective, kills entire colony including larvae.
• Cons: Limited to accessible nests; risk of stings; chemicals may harm beneficial insects

Insecticidal Dust

• Apply dust insecticides (carbaryl, permethrin, Tempo Dust) directly into the nest entrance at night.
• Dust clings to insects and is carried into the nest, killing the colony.
• Effective for underground or concealed nests.
• Pros: Penetrates deep nests, localized effect, residual control.
• Cons: Must get close to nest; may not reach large colonies fully

Natural Option: Diatomaceous Earth

• Sprinkle diatomaceous earth around and inside nest openings.
• It damages the exoskeletons of yellow jackets, causing dehydration and death.
• Safe, non-toxic, but slower acting and less effective for aerial nests.
• Needs reapplication after rain

Baiting and Trapping

• Use bait stations with meat mixed with insecticide (e.g., Onslaught Insecticide) to lure and kill yellow jackets.
• Yellow jacket traps with lures like fruit juice or meat can reduce populations when nests are not located.
• Place traps away from people to draw yellow jackets away safely

Home Remedies (Less Recommended)

• Soapy water or dry ice can kill yellow jackets in underground nests but are less reliable.
• Some anecdotal reports suggest WD-40 spray kills wasps but is not a standard pest control method

4. Safety Tips

• Always treat nests at night to minimize stings.
• Wear protective clothing.
• Keep children, pets, and bystanders away from treatment areas.
• If allergic to stings, seek professional pest control assistance.

By combining locating the nest, treating at night, and using insecticidal aerosols or dusts, you can effectively eliminate yellow jacket colonies