1. Home
  2. All Products
  3. FourStar
  4. FourStar® Bti CRG
Large white bag of the FourStar Bti CRG Larvicide behind a pile of the product

FourStar Bti CRG

FourStar® Bti CRG is a heavy, high-density and sand-based larvicide designed for saltwater 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.

FourStar® BTI CRG
Manage mosquito populations and your mosquito abatement budget at the same time.
Punch the Numbers
Learn more about our comprehensive lineup of solutions from an authorized distributor.
Find a Rep
Stay up to date on the latest news, rebates, product innovations and more.
What’s the Buzz?