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Large box of FourStar Briquet 90 Larvicide with a pile of product in front

FourStar® Briquet - 90

FourStar® Microbial Briquets are designed with a patented dual-action sustained release technology to remain effective through wet and dry periods. This flexible solution allows mosquito control professionals to pre-treat potential mosquito breeding sites. Featuring naturally occurring active ingredients, Bti and Bsph, 90-day FourStar® Microbial Briquets provide residual control of mosquito populations. This formulation can be applied to standing water without fear of harming aquatic life as well as in areas frequented by humans, livestock and wildlife.


  • Proven microbial active ingredients 
  • 6% Bsph and 1% Bti 
  • Long-term residual control of up to 90 days or more 
  • Sustained release technology
FourStar® Briquet - 90
Manage mosquito populations and your mosquito abatement budget at the same time.
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