Treatment & Consent
The Treatment
The Oregon Department of Agriculture (ODA) coordinates the treatment on a set area of irrigated turf grass and ornamental landscaped areas with a larvicide that kills Japanese beetle in their larval stage when they still live in the soil. This is an essential component to this eradication project.
Here are the basics about the treatment process:
The Oregon Department of Agriculture (ODA) coordinates the treatment on a set area of irrigated turf grass and ornamental landscaped areas with a larvicide that kills Japanese beetle in their larval stage when they still live in the soil. This is an essential component to this eradication project.
Here are the basics about the treatment process:
- ODA requests consent for treatment from residents, including tenants or renters, from every property in the treatment area. The eradication will be most successful with everyone on board. No lawn (or ornamental bed) left behind!
- ODA employees supervise a hired commercial pest control operator to spread a granular application of Acelepryn G on the irrigated turf grass and ornamental beds of all properties in the affected areas of Washington County.
- Acelepryn G is a Group 28 reduced-risk larvicide. This means it has the lowest relative toxicity compared to other larvicides labeled for the same purpose. The ODA will apply the larvicide according to the most recent label instruction (visit the Health & Safety section of the FAQ page for more information about the larvicide).
- ODA conducted a treatment of Acelepryn G in the spring from 2017 - 2023. There is also treatment planned for spring of 2024.
- It takes ODA approximately six weeks to apply the larvicide to all properties in the affected area.
- This application is FREE to all residents and property owners in the affected area.
- An additional foliar spray is planned for areas with high beetle density. This foliar spray has the same active ingredient as the granular treatment. Foliar applications have occurred since 2019, and are planned for the summer of 2024.
What to Know
Treatment may take place anytime between 8am and 5pm. There is just one granular treatment per property or residence scheduled for 2024. In beetles with higher beetle density, an additional supplementary foliar treatment is planned.
The treatment for Japanese beetles will be done by a professional, licensed pesticide applicator under contract with the Oregon Department of Agriculture (ODA). An observer from ODA will also be present for treatment. Only lawns and ornamental planting beds will be treated. Vegetable gardens, berry bushes, and other edible plants will not be treated.
This treatment consists of the application of Acelepryn G granular larvicide to lawns or ornamental planter beds. This will take approximately 15 minutes or less; most properties done in about 5 minutes or less. You do not need to be home or present for the application. If you will not be home, please see instructions below about how to prepare your residence for the treatment.
Please make sure that your property is accessible to the contractor’s crew. We need to treat front and backyards. All applicable outside gates and entryways should be unlocked. Animals must be kept inside for the safety of our crew. Rescheduling properties for treatment at a later date is time-consuming and costly, and can reduce the efficacy of the treatment.
The scheduled time above is weather dependent. Very rainy weather or saturated soil increases the risk of the product being washed off the surface quickly and not entering the soil. Normal to light rain is OK. If it is too rainy on the day of scheduled treatment, or if we are delayed for other reasons, we will notify you of the rescheduled date as soon as possible.
Information from the Oregon Health Authority about Acelepryn G can be found at http://oda.direct/jbhealth
Before the treatment
On or prior to the morning of treatment, please make sure that:
1. Your property is accessible to the contractor’s crew. We need to treat front and backyards. All applicable outside gates and entryways should be unlocked. Animals must be kept inside for the safety of our crew.
2. Non-stationary items that can be easily moved should be removed from lawns and grassy areas.
3. Water and food bowls for pets should be removed or covered during application.
4. Adults, children and pets of all kinds should remain inside during the application so as not to interfere with personnel conducting the treatment. The application should take 15 minutes or less to complete.
After the treatment
To get the Acelepryn G near the grass roots to be effective against root-feeding grubs, we ask you to water your lawn for 10-15 minutes at your earliest convenience. If it has rained during or following application, it is not necessary to water it in. Keep children and pets off the treated area as long as granules are still visible. Inspect walkways and patios, and sweep-up or pick up stray granules (after putting on gloves). Granules are supposed to be watered in (unless applied during rain or it has rained since application). The area is then immediately safe to re-enter.
If there is a white marker flag in your yard, you may remove it after treatment.
The treatment for Japanese beetles will be done by a professional, licensed pesticide applicator under contract with the Oregon Department of Agriculture (ODA). An observer from ODA will also be present for treatment. Only lawns and ornamental planting beds will be treated. Vegetable gardens, berry bushes, and other edible plants will not be treated.
This treatment consists of the application of Acelepryn G granular larvicide to lawns or ornamental planter beds. This will take approximately 15 minutes or less; most properties done in about 5 minutes or less. You do not need to be home or present for the application. If you will not be home, please see instructions below about how to prepare your residence for the treatment.
Please make sure that your property is accessible to the contractor’s crew. We need to treat front and backyards. All applicable outside gates and entryways should be unlocked. Animals must be kept inside for the safety of our crew. Rescheduling properties for treatment at a later date is time-consuming and costly, and can reduce the efficacy of the treatment.
The scheduled time above is weather dependent. Very rainy weather or saturated soil increases the risk of the product being washed off the surface quickly and not entering the soil. Normal to light rain is OK. If it is too rainy on the day of scheduled treatment, or if we are delayed for other reasons, we will notify you of the rescheduled date as soon as possible.
Information from the Oregon Health Authority about Acelepryn G can be found at http://oda.direct/jbhealth
Before the treatment
On or prior to the morning of treatment, please make sure that:
1. Your property is accessible to the contractor’s crew. We need to treat front and backyards. All applicable outside gates and entryways should be unlocked. Animals must be kept inside for the safety of our crew.
2. Non-stationary items that can be easily moved should be removed from lawns and grassy areas.
3. Water and food bowls for pets should be removed or covered during application.
4. Adults, children and pets of all kinds should remain inside during the application so as not to interfere with personnel conducting the treatment. The application should take 15 minutes or less to complete.
After the treatment
To get the Acelepryn G near the grass roots to be effective against root-feeding grubs, we ask you to water your lawn for 10-15 minutes at your earliest convenience. If it has rained during or following application, it is not necessary to water it in. Keep children and pets off the treated area as long as granules are still visible. Inspect walkways and patios, and sweep-up or pick up stray granules (after putting on gloves). Granules are supposed to be watered in (unless applied during rain or it has rained since application). The area is then immediately safe to re-enter.
If there is a white marker flag in your yard, you may remove it after treatment.
Foliar Spray Information
For areas with high beetle density, we supplement the granular treatment (Acelepryn G®) with a foliar spray (Acelepryn®). The application is free. This foliar application has the same active ingredient (chlorantraniliprole) as the granular treatment, and therefore the same minimal risks.
Pesticide information:
Acelepryn® is an insecticide that kills certain pests feeding on ornamental plants, shrubs and trees. This is a “reduced risk” pesticide and is not considered to be a health risk for humans, pets, wildlife and other beneficial insects (including bees) when applied correctly and according to label directions. For more information click here.
Treatment information:
Treatment consists of a foliar spray called Acelepryn® that is used on ornamental trees, shrubs and plants and takes approximately 10-15 minutes per property. Vegetable gardens, herb gardens, berry bushes and other edible plants are not be treated. It is safe to re-enter the treated area once the spray has dried.
Pesticide information:
Acelepryn® is an insecticide that kills certain pests feeding on ornamental plants, shrubs and trees. This is a “reduced risk” pesticide and is not considered to be a health risk for humans, pets, wildlife and other beneficial insects (including bees) when applied correctly and according to label directions. For more information click here.
Treatment information:
Treatment consists of a foliar spray called Acelepryn® that is used on ornamental trees, shrubs and plants and takes approximately 10-15 minutes per property. Vegetable gardens, herb gardens, berry bushes and other edible plants are not be treated. It is safe to re-enter the treated area once the spray has dried.
Am I in the Treatment Area?
Visit this link to find out if your home or property is in the proposed Japanese beetle treatment area for 2024, and where Japanese beetle were trapped in 2023.
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Instructions for using the map:
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If you live within the treatment area, you will receive a notice from the Oregon Department of Agriculture with details about the project, including a consent form. Treatment for Japanese beetle begins each year in April.
Please return your completed consent form or complete the online form as soon as possible once you've received it.
Please return your completed consent form or complete the online form as soon as possible once you've received it.
Photos taken by Daniel Mettler and Chris Hedstrom
