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How to Manage Pests

Key to Identifying Common Household Ants


Trimming branches
Trim branches away from buildings

Make your house less attractive to ants

  • Caulk cracks and crevices around foundations that provide entry from outside.
  • Trim branches and limbs of trees and shrubs that touch the building to keep ants from gaining access via these routes.
  • Eliminate food sources inside the building or prevent access to suitable food by keeping it in ant-proof containers.
  • Clean up sugary spills.
  • Provide a dry, vegetation-free border, such as gravel or stones, around the perimeter of house foundations to discourage nest building; wood chip mulches and landscape plants provide a good nesting environment.
  • Manage honeydew-producing insects such as aphids, whiteflies, psyllids, and soft scales on plants near the house. These honeydew producers often support large colonies of ants that subsequently invade homes.
  • Remove trees that consistently host ants and are adjacent to houses.


Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

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