FourStar® Bti CRG

FourStar® Bti CRG is a heavy, high-density and sand-based larvicide designed for both saltwater and freshwater habitats with vegetative canopy. A dual action controlled release technology allows FourStar® Bti CRG to remain effective through wet and dry periods. It can kill larvae for up to 40 days and 4 floodings.


  • High density, spherical silica sand carrier
  • 10% Bti active ingredient
  • Dual-action controlled release technology
  • Up to 40 days residual
  • Effectiveness in intermittent flood areas


  • Can be applied to pre-flood areas
  • Wet/dry effectiveness reduces applications
  • Controls Aedes taeniorhynchus
  • Weight provides optimal vegetation penetration
  • Less target drift
  • More coverage per application


FourStar® Bti CRG is approved for ground and aerial application at a minimum 7.5 to 10 lbs/acre, up to 20 lbs/acre.

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