VectoLex® WDG

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VectoLex® WDG

VectoLex® WDG


Active Ingredient:

Categories: ,

Product Specs: 51.2% Bacillus sphaericus

Packaging: 24x1 lb containers and 25 lb dr


VectoLex WDG is a water-dispersible granule formulation of Bacillus sphaericus 2362 (strain ABTS-1743) for residual control of mosquito larvae. The potency of VectoLex WDG is 650 Bs International Toxin Units (Bs ITU) per milligram against Culex quinquefasciatus larvae. VectoLex WDG offers extended control of all Culex species and has been found to be effective against the following species:

  • Aedes melanimon
  • Aedes nigromaculis
  • Aedes sollicitans
  • Aedes stimulans
  • Aedes triseriatus
  • Aedes vexans
  • Anopheles darlingi
  • Anopheles gambiae
  • Anopheles quadrimaculatlus
  • Coquillettidia perturbans
  • Psorophora columbiae
  • Psorophora ferox

Where and When to Use VectoLex® WDG:

VectoLex WDG formulation offers the storage stability of a dry product with the application versatility of a liquid spray. Consisting of only Bs (strain ABTS-1743) and food-grade (US EPA list 4) inert ingredients, VectoLex WDG has received approval for application in organic crops and sensitive habitats in various countries around the world. This versatile formulation allows a variety of application modes and uses for mosquito control.



  • Dry formulation
  • Mixes easily in water
  • Highly specific activity on select mosquito species
  • Works extremely well in polluted waters
  • Provides the industry’s most target-specific biorational for residual control of West Nile virus vectors
  • The microbial mode of action allows for easy, on-site efficacy evaluations
  • VectoLex’s fermentation consistency and pharmaceutical-grade standards significantly reduce lot-to-lot variation relative to other manufacturers, providing greater peace of mind


  • Increased storage shelf life
  • Decreased weight to transport
  • Aqueous spray
  • Sprays easily through many equipment types
  • Not harmful to non-target organisms
  • Results assessed quickly in field

Mode of Action:

The larvae ingest the VectoLex WDG insecticide, consisting of Bs spores produced by the bacteria. Only when activated by the larva’s specific gut PH and enzymes, do the spores become toxic, causing damage to the gut of the mosquito. Mortality rate is dependent on consumption of the Bs by 1st through early 4th instar larvae. The product is quick acting and highly effective against a number of mosquito species and its long term residual makes it ideal for use in a wide number of permanent aquatic habitats.

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