Biological Larvicide Aqueous Suspension

VectoBac 12AS (also known as SC; Suspension Concentrate) is an aqueous suspension formulation of 11.61% Bacillus thuringiensis subsp. israelensis (strain AM65-52) for control of mosquitoes, black flies, and closely related fly larvae. The product has a potency of 1200 International Toxin Units (ITU) per milligram against Aedes aegypti larvae.

  • Not harmful to non-target organism populations
  • Application flexibility with broad control of all mosquito species
  • Quickly kills mosquito larvae in 2-24 hours for results that can be observed in the field
  • Organic Material Review Institute (OMRI) and National Organic Program (NOP) certified 

When/Where to Use:  VectoBac 12AS is intended for use in aqueous spray applications to habitats with little or no vegetation. Rate selected should be based on habitat, larval population/stage, and/or environmental conditions.

Mode of Action:

Use 0.25 -- 2 pints/acre (0.3 -- 2.3 liters/hectare). VectoBac 12AS is the worldwide standard for biorational control of black fly larvae in rivers. In fact, the particle size and suspension properties of VectoBac 12AS were originally designed for black fly control. In 1974, the World Health Organization initiated the Onchocerciasis Control Program (OCP) in West Africa to combat the devastating effects of river blindness (transmitted by black flies) in that region. The introduction of VectoBac 12AS in the 1980s to this program helped the program virtually eradicate the disease, preventing an estimated 600,000 cases of blindness and making 25 million hectares of land safe for use.

Item Designations:
EPA Registered Pesticide or Minimum Risk Pesticide