FourStar® Briquet BTI - 45 Day

FourStar® Sustained Release 45 Day Microbial Briquets offer mosquito abatement professionals mosquito control without compromise. Formulated with naturally occurring bacteria, Bacillus thuringiensis israelensis (Bti), FourStar® Bti Briquets are environmentally compatible, and are approved for application in areas that contain aquatic life and are in contact with humans and animals. Designed for cost-efficient application, FourStar® Bti Briquets can be applied to known mosquito breeding sites during wet or dry periods ensuring the release of Bti once the area floods. Alternate wetting and drying will not impact the efficacy of the briquet, ensuring effective mosquito control for 45 days or more.

For effective control of mosquito larvae through the first three instars, apply one FourStar® Bti briquet to cover up to 100 square feet of area. For maximum effectiveness, apply briquet in shaded conditions.


  • 1.25 inch diameter, 0.875 inches high briquet shape
  • 7% Bacillus thuringiensis israelensis (Bti)
  • Sustained release technology
  • 100 square foot coverage area
  • 45 days or more of mosquito control
  • Residual Bti control
  • Ideal option for rotation plans

Manage mosquito populations and your mosquito abatement budget at the same time.

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