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VectoLex WDG

VectoLex WDG Product 

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:

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.

Suggested Rate Range:


(excluding catch basins, storm drains, etc.)
0.5–1.5 lbs/acre (0.6–1.7 kg/ha)

Use higher rates (1.0–1.5 lbs/acre; 1.1–1.7 kg/ha) in areas where extended residual control is necessary, or in habitats having deep water or dense surface cover. Apply uniformly by conventional ground or aerial spray equipment. Reapply as needed every 1–4 weeks.

VectoLex Habitat 

Liquid sprays have been demonstrated to work extremely well to treat Culex spp. habitats in “closed” habitats such as catch basins. For your specific catch basin needs, please contact our technical development specialists for further information.

Suggested Rate Range:

1.0–1.5 lbs/acre (1.1–1.7 kg/ha)


  • 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

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