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Table 3 Formulation-dosage combinations recommended to UMCP staff to achieve 100% control of mosquito larvae within 24 hours.

From: A tool box for operational mosquito larval control: preliminary results and early lessons from the Urban Malaria Control Programme in Dar es Salaam, Tanzania

Producta Active Dosage Application
  Ingredientb kg/hectare g/m2 Cycle
Open habitats c     
VectoLex® WDG (650 ITU/mg) Bs 2.0 0.20 1 week
VectoBac® WDG (3000 ITU/mg) Bti 0.4 0.04 1 week
VectoLex® CG (50 ITU/mg) Bs 30 3 1 week
VectoBac® CG (200 ITU/mg) Bti 10 1 1 week
Closed habitats c     
VectoLex® CG (50 ITU/mg) Bs 10 1 3 months
  1. a ITU = International Toxic Units, describes the potency of larvicide, the higher the number, the more toxic is 1 mg the less is needed to kill 100% of larvae within 24 hrs
  2. b Bti; Bacillus thuringiensis var israelensis, Bs; Bacillus sphaericus
  3. c See box 1 for definitions.