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P.O. Box 42560
1111 Washington ST SE
Olympia, WA 98504-2560
Phone: (360) 902-1800

2026 Treatments

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Educational Opportunities

Stop by WSDA's booth to sign up for a free yard treatment, learn everything you need to know about Japanese beetle, and get your questions answered by experts. Prevent the spread and protect your property and community from Japanese beetle.

Benton County

What Date Time Where
GSL Yakima Annual Growers Meeting 1/14/2026 TBD Yakima Convention Center, 10 N 8th St, Yakima, WA 98901

Franklin County

What Date Time Where
Regional Home and Garden Show 2/13-15/2026 10 a.m. - 7 p.m. HAPO Center, 6600 Burden Boulevard, Pasco, WA

King County

What Date Time Where
Northwest Flower & Garden Festival 2/18-22/2026 9 a.m. - 6 p.m.  705 Pike Street, Seattle, WA 98101-2310

Yakima County

What Date Time Where
Grandview High School Bazaar 11/15/2026 .9 a.m. - 2 p.m. Grandview High School, 1601 W 5th St, Grandview, WA 98930-1161

Virtual

What Day Time Where
Japanese beetle treatment webinar: What residents need to know 1/21/2025 6 p.m. Watch the recording

Additional Counties

What Date Time Where
Washington State Weed Conference 11/5-7/2025 9 a.m. - 5 p.m. Wenatchee Convention Center, 121 N Wenatchee Ave, Wenatchee, WA 98801

Japanese Beetle Treatments: What Residents Need To Know

Watch this video below to learn more about Japanese beetle treatments including how to sign up, prepare, and know when your treatment is complete.
See the Frequently Asked Questions below about treatment.
WSDA uses the insecticide Acelepryn®. It kills certain pests in their grub (larval) state in the soil. It is a "reduced risk" pesticide according to the Washington State Department of Health. It is not considered a health risk for humans, pets, wildlife, or other insects that don't go through a larval state in soil (including pollinators like bees). For more information visit Washington State Department of Health's website on Japanese beetle treatment.
Yes, you must provide consent each year. Thank you for your support!
  • You are welcome to but do not need to be home.
  • The treatment may take place between 8 a.m. and 5 p.m. in April, May, or June.
  • You will be notified before the treatment via the contact information you provide on your consent form.
  • Please make sure your lawn is clear
  • Please unlock your gates
  • If possible, have your lawn mowed.
  • Residents and animals should be kept away from the treatment area until dry

If you are home, representatives can answer any questions. Once the area is dry it is safe to re-enter.

  • A sign will be left notifying you that your treatment is complete. 
  • If possible, please refrain from mowing your lawn immediately after treatment.
Renters have the authority to consent to treatment for property in which they physically dwell. You are, of course, welcome to discuss the project with your landlord.
Although the applications are done in the spring, you won’t see the full effect until the following year, so you will likely still see beetles in the area, and it will likely take several treatments before the beetle can be totally eradicated. We need all properties to agree to treatment to succeed. If we are unable to treat a neighboring property, beetles from that property are likely to show up in your yard, too. This is why it is important to encourage your neighbors, friends, and family in treatment areas to agree to have their property treated.
Untreated properties become a haven for beetles, prolonging their ability to remain in the state. Because of this, WSDA may seek administrative warrants through the courts to treat properties that decline or do not respond to treatment requests.
We don’t have to guess about the impacts this beetle will have on our state; we need only look at states that have permanent infestations of the beetle. Farmers and plant nurseries are subject to expensive and restrictive quarantines to move their products, as well as increased pesticide costs to manage the beetle. Residents must deal with the pest in their lawns and gardens as well, either increasing pesticide use or manually removing the beetles – some even using vacuums because of the sheer number of beetles. Visitors and tourists must also deal with the beetles being a nuisance flying into them while trying to enjoy the outdoors. We can avoid all this by eradicating the beetles now.
Japanese beetle grubs live in soil. Adults lay eggs in lawns and soil where you can’t see them. We deploy thousands of traps in the area to catch Japanese beetle adults and to help prevent them from laying as many eggs. Our trapping can help keep adults off your plants and trees where you might see them. Applications are the only way to treat the grubs, that is why it is important to sign up for treatments to target the pest before you see it.

PUBLIC HEALTH

Acelepryn® G and Acelepryn® have an excellent safety record when used as directed. You can limit contact with the product by following the safety recommendations:
  • Avoid the area and keep pets inside until the treatment has dried.
  • If you come in contact with the pesticide, wash the affected skin with soap and water.
  • Remove and wash exposed clothing. Keep and wash clothing separate from other laundry.
  • Experts do not expect health concerns from eating produce grown in Acelepryn® G or Acelepryn®-treated soil.
Talk to your health care provider if you have health concerns related to Acelepryn® G or Acelepryn®.
If you’d like information about the product used for treatment, visit the Washington State Department of Health's website.

Click the buttons below to open treatment and health handouts
 

 

 

Stay Informed

Sign up for Japanese beetle project updates to stay informed. If you need help please call 1-800-443-6684 or email pest@agr.wa.gov

Text messages

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E-mail

Join the Japanese beetle e-mail list

Facebook Group

Join the WA State Japanese Beetle Facebook group 

Public Treatment

You can protect gardens by placing a trap nearby to capture any beetles that may from the soil. If you capture beetles, please report them.

Do not treat for Japanese beetle if you do not have the pest.

If you have beetles, you may be interested in extra self treatment. Please contact your local Washington State University Extension for information. Click the link below to open a self treatment handout