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Related Experiment Video

Updated: Jul 11, 2026

A Method for Evaluating Insecticide Efficacy against Bed Bug, Cimex lectularius, Eggs and First Instars
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Efficacy of bifenthrin treatment zones against red imported fire ant.

A M Pranschke1, L M Hooper-Bùi, Barry Moser

  • 1Department of Entomology, 404 Life Science Building, Louisiana State University, Baton Rouge, LA 70803, USA.

Journal of Economic Entomology
|March 26, 2003
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Summary
This summary is machine-generated.

Granular bifenthrin does not repel red imported fire ants but effectively excludes them from treated zones. Wider treatment zones offer longer-lasting protection for homes and facilities.

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Area of Science:

  • Urban Entomology
  • Pest Management
  • Chemical Ecology

Background:

  • Red imported fire ant (Solenopsis invicta) exclusion is crucial for pest control in various settings.
  • Bifenthrin is a common insecticide used for pest management.
  • Understanding ant behavior towards insecticides is key for effective control strategies.

Purpose of the Study:

  • To evaluate the repellency of granular bifenthrin to Solenopsis invicta foragers in laboratory conditions.
  • To assess the field efficacy of different widths of granular bifenthrin-treated zones against fire ants.
  • To determine the duration of protection offered by bifenthrin treatments.

Main Methods:

  • Laboratory bioassay to test bifenthrin repellency on fire ant foragers.
  • Field study comparing 0.3, 2.0, and 3.0 m wide granular bifenthrin-treated zones.
  • Monitoring ant intrusion and survival rates across treated zones over time.

Main Results:

  • Granular bifenthrin demonstrated nonrepellent properties in laboratory bioassays.
  • 2.0- and 3.0-meter treatment zones provided 100% protection for 7 weeks.
  • Effective control was observed for up to 15 weeks, with reduced ant intrusion in wider zones.

Conclusions:

  • Granular bifenthrin is effective in excluding fire ants, not through repellency, but by creating a barrier.
  • Wider treatment zones (2.0-3.0 m) offer extended protection periods.
  • Regular retreatment (monthly/bimonthly) is necessary for continuous protection in sensitive areas like hospitals and nursing homes.