Signs have appeared in the park indicating that mosquito larvae spraying has recently occurred. The two signs are next to standing water in a ditch adjacent to the path and next to one of the four inner ponds of the wetland complex. FOSS was concerned, particularly about spraying the wetland ponds, and approached the City for an explanation.
Toronto Public Health responded in this way .......
"Surface water pools are regularly monitored by staff and are only treated once the presence of mosquito larvae is detected. BTi is used to treat these pools and is a highly specific biological bacterium that kills the larvae within a matter of hours. This product is not harmful to humans, pets, wildlife and fish."
Although there appears to be no real danger to the spraying, it seems a little unusual to refer to a wetland pond as a "field pool" and aren't mosquito larvae part of a food chain?
If anyone wants to follow up on this, please feel free.