Suppression and Eradication Programs

​Light brown apple moth

Light brown apple moth (LBAM) detections

The Oregon Department of Agriculture (ODA) caught 1 light brown apple moth in 2010, 2 in 2015, and 3 in 2016. All moths were caught within a one square mile area south of Independence in Polk County. Catching moths in 2015 and then again in 2016 in the same general area indicates the presence of a breeding population of LBAM. 

2017 Proposed LBAM eradication project south of Independence, Polk County

The proposed eradication program includes:

  • Adult LBAM treatments: Two applications of SPLAT, a mating disruption pheromone, applied by airplane
  • Larval LBAM treatments: Three applications of Bacillus thuriengensis kurstaki (Btk), a biological pesticide​, applied by airplane
  • Delimitation traps placed in the vicinity of the trap catches and detection traps placed statewide.​​

The treatments are tentatively scheduled to begin June 21, 2017.

To receive notifications about the proposed LBAM treatment you may subscribe to our mailing list​.

Light Brown Apple Moth Resources

2017 Proposed Treatment Area Map for the Light Brown Apple Moth

An online map that shows the proposed 2017 LBAM treatment area. Web Map

B.t.k. Information from the National Pesticide Information Center (NPIC)

YouTube Video

Director's Decision to Treat Light Brown Apple Moth in Polk County

LBAM treatment: Director's decision

Oregon Health Authority: Btk Insecticide FAQs

Btk FAQs

Oregon Insect Pest Alert: Light Brown Apple Moth

Pest Alert: Light Brown Apple Moth

Polk County Letter of Approval for LBAM Treatment

Polk County Letter of Approval for LBAM Treatment

Product Label for SPLAT

Product Label for SPLAT

SPLAT Frequently Asked Questions


Japanese beetle

2016 Japanese beetle ​detections

The Oregon Department of Agriculture (ODA) trapped 373 Japanese beetles in the state, all in the Portland area:

  • Portland International Airport and vicinity (Multnomah County), 3 beetles
  • Swan Island (Multnomah County), 1 beetle
  • Cedar Mill Area (Washington County), 369 beetles

The 2016 Japanese beetle catch is the largest in Oregon since the state started the Japanese beetle detection program in the 1940’s. Prior to 2016, the total number of beetles caught over the past 28 years (1988-2015) was 403. The beetles caught in 2016 represent 92% of all Japanese beetles caught in Oregon since 1988. We observed many live beetles feeding on roses and other plants In Cedar Mill and Bethany, indicating the presence of an infestation.​   

2017 Pr​oposed Japanese beetle eradication project in Cedar Mill and Bethany

The proposed eradication program includes:

  • One application of the granular pesticide Acelepryn® G is planned for April and May, 2017. Acelepryn® G is a low-risk insecticide that targets the larval stage of the Japanese beetle. It is applied to lawns and irrigated landscapes using hand held seed/fertilizer spreaders. No foliar spray treatments are proposed.​​
  • Many Japanese beetle traps will be placed within and surrounding the proposed treatment area to monitor the infestation.

Detection traps will be placed throughout the state starting spring 2017.​​

Open house informational events

Public open houses will be held at:

  • March 4, 2017: 9:30 am – 12:30 pm
    The Leedy Grange Hall
    835 NW Saltzman Rd.
    Portland, OR, 97229
  • March 6, 2017: 5:15 pm – 7:15 pm​
    The Cedar Mill Library
    12505 NW Cornell Rd.
    Portland, OR, 97229

Japanese beetle resources​

2017 Proposed Japanese Beetle Treatment Map

ArcGIS Online map

Acelepryn G® Frequently Asked Questions

Acelepryn G® pesticide product information from Oregon Health Authority. Acelepryn G® FAQs

Draft Japanese Beetle Response Plan

Draft Japanese Beetle Response Plan

Granular Insecticide for JB

Acelepryn® G insecticide label

Help Save the City of Roses from Japanese Beetle

Information about the Japanese beetle, its current status in Portland, the proposed treatment, and resources.

Japanese Beetle Economic Risk Assessment

Japanese Beetle Economic Risk Assessment

Japanese Beetle Frequently Asked Questions

Frequently asked questions about Japanese Beetle

Japanese Beetle in Oregon

Yearly summary report for Oregon's Japanese beetle trapping and eradication program 2016 Summary Report

Japanese Beetle Look-Alikes Guide

A visual guide to Japanese beetle look-alikes

Japanese Beetle: A Major Pest of Plants

Brochure about Japanese Beetle

Japanese Beetle: Threat and Opportunity in Oregon

Japanese Beetle Threat and Opportunity pdf document

Gypsy moth

The Oregon Department of Agriculture, in conjunction with USDA and other federal and state agencies, conducted an eradication program in the North and Northwest Portland area in 2016. Approximately 7,000 acres were treated in April and May with an aerial application of a biological pesticide Bacillus thuringiensis kurstaki to eradicate the Asian and European gypsy moth infestation. To view the area where the treatment took place please see the map link below. 

ODA has completed the trapping program for the 2016 season. We did not detect any gypsy moths in the Portland area, indicating the treatment was a success. However, we caught six gypsy moths in other parts of the state in 2016:

  • Vida, Lane County, 2 gypsy moths
  • Grants Pass, Josephine County, 4 gypsy moths

Detection traps will be placed throughout the state starting this spring. No eradication is proposed. 

​Gypsy moth resources

2016 Asian Gypsy Moth Environmental Assessment (EA)


2016 Asian Gypsy Moth Treatment Map

A map that is frequently updated showing the 2016 AGM treatment progress. ESRI Online Map

Asian Gypsy Moth: Threat and Opportunity 2016


B.t.k. Information from the National Pesticide Information Center (NPIC)

YouTube Video

Effects of Aerial Btk on Non-Target Lepidoptera Caterpillars


Gypsy moth awareness video

From the Washington Dept of Agriculture, this video includes 13 ways gypsy moths damage the ecosystem, the economy, and harm people. Also included, how to identify gypsy moth and eradication methods. YouTube Video

Gypsy Moth Eradication Program Overview

Basic information about gypsy moth eradication Document

Gypsy Moth in Oregon

Yearly summary report for Oregon's gypsy moth trapping and eradication program 2016 Summary Report

Gypsy Moth: A Destructive Forest Pest


Invasion of Gypsy Moth Caterpillars in Hanover Township, Pennsylvania


ODA news on gypsy moth

News blog

Oregon Gypsy Moth Detection Map (2015)


Oregon Health Authority: Btk Insecticide FAQs

Btk FAQs

Phenology of Butterflies and Moths in Oregon in relation to Asian Gypsy Moth eradication efforts


Report from the Technical Working Group in Response to the Asian Gyspy Moth Captures (Washington-Oregon 2015)


Support Letter from British Columbia for the 2016 AGM Eradication


Support Letter from the Northeastern Area Association of State Foresters for the 2016 AGM Eradication



Grasshopper suppression

Oregon participates in a federal program to monitor, and suppress when necessary, grasshoppers and Mormon crickets. Even though not all grasshopper species are pests, outbreaks can vary in their magnitude and geographic expanse. Early intervention can dampen the severity of an outbreak cycle.

Grasshopper survey report

The 2015 Oregon grasshopper survey season showed a continuing increase in the grasshopper population which had been declined through 2013 from a high in 2011. An estimated 2.4 million acres across eastern Oregon were found to be economically infested. ODA and USDA-APHIS did not participate in any control efforts during 2015, though from various informal reports we believe there were several programs for treating privately held land.​​

Grasshopper resources​​​​​​​​​​

Grasshopper & Mormon Cricket information-USDA


Grasshopper Report

Grasshopper Report Summary (full) Document

Grasshopper Report Summary

Grasshopper Report Summary (brief) Document



Gypsy Moth and Japanese Beetle

Barry Bai
Insect Pest Prevention & Management
Phone: 503-986-4645
Clinton Burfitt
Program Manager
Insect Pest Prevention & Management
Phone: 503-986-4663


Paul Blom
Insect Pest Prevention & Management
Phone: 503-508-1253
Insect Pest Prevention & Management
Phone: 503-986-4636