May 2026
PUBLIC NOTICE
Please be advised that G.D.G. Environment will pursue its biting fly control program in Labrador City/Wabush
and in CFB Five Wing Goose Bay in 2026. The program aims to reduce mosquito and black fly larvae in their
habitats, before they emerge as biting adults. Sites where mosquito larvae breed will be treated from the
ground and from the air, with Bti, a biological insecticide. The applications will start between the second and
last week of May (depending on weather conditions) and will continue until the end of August. A team of
trained and qualified personnel will perform treatments and monitor operations.
Bti is a very safe insecticide, it is registered and used in Canada for the control of mosquitoes and black flies.
The contractor G.D.G Environnement proceeds in accordance with the highest safety standards, which
prevents any exposure of the population to the product. In the environment, Bti is very safe because it
selectively kills mosquito and black fly larvae only and also because it is entirely biodegradable in a matter of
a few days.
G.D.G. Environnement will carry out all work with the authorization of the Government of Newfoundland and
Labrador (permit no 24-033). Only federally approved biological products are allowed to be used under the
authorization of Health Canada.
GDG Environment will use different formulations of Bti :
VectoBac 1200L (reg. #21062, produced by Valent Biosciences) or MY-Crobe XT (reg. #34633, produced
by Clarke Mosquito Control Products) or Aquabac XT (reg. # 26860, produced by Clarke Mosquito Control
Products) are a water-based formulation that will be used for ground operations.
VectoBac 200G (reg. #18158, produced by Valent Biosciences) or My-Crobe 200G (reg. #34628,
produced by Clarke Mosquito Control Products) or Aquabac 200G (reg. # 26863, produced by Clarke
Mosquito Control Products) are a granular formulation, consisting of crushed corn coated with Bti will be
used for aerial operations.
Other details concerning this program can be obtained by contacting GDG Environment:
info.mosquito@gdg.ca or toll free at 1-877-227-0552 or the Pesticides Control Section : 1-709-729
2556 (Environment, Conservation and Climate Change Government).