WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office.
Lawn and Turf: Ants
categories: Lawn and Turf Lawn and Turf Insects
revision date: 2024-06-07 08:13
Photo by: A.L. Antonelli
Biology
Ants are primarily a nuisance pest in lawns. Occasionally, they may kill the grass, causing an aesthetic problem. Various species may occur in lawns, including harvester ants which can have a severe sting.
Management Options
Use Integrated Pest Management (IPM) for successful plant problem management.
Non-chemical Management
Select non-chemical management options as your first choice!
- Repeated flooding of infested areas can drive ants out of their nests and force them to relocate. Flooding must be done every few days until the ants move.
- Tolerate ants when possible, as they can be beneficial insects.
Chemical Management
IMPORTANT: Visit Home and Garden Fact Sheets for more information on using pesticides.
- Effective ant control normally requires destruction of the queen. In most cases, this necessitates one or more applications of a liquid or granular insecticide.
- In situations where only a few colonies are present, apply insecticides directly to colony openings and the areas immediately surrounding the mounds.
Approved Pesticides
Listed below are examples of pesticides that are legal in Washington. Always read and follow all label directions.
Additional Image
Photo by: D.G. James
WSU Extension programs and employment are available to all without discrimination.
Evidence of noncompliance may be reported through your local Extension office.