Larvicide Program (2025)
A spring application of the larvicide is planned to be conducted by helicopter to stagnant water within 2 km of the Town of Parkhill, Village of Ailsa Craig, the Hamlet of Nairn, and the Hamlet of Carlisle to control the larval stages of mosquitoes. The Spring Aerial mosquito program is timed to control the snow-melt mosquitoes and the early summer larva.
This biological larvicide contains the active ingredient “BTI” and is very specific to mosquito larva (information regarding the product can be found below). The application is weather-dependent and will take place between April and June, dates to be confirmed.
Larvicide Application Process
The Spring Aerial mosquito program is timed to control the snow-melt mosquitoes and the early summer larva. The program can provide control typically into May with the aerial application. The rest of the season is dependent on precipitation, and once into June, the tree cover starts to interfere with the effectiveness of the application by air.
If any standing water flooding is found in May/June time frame, please report to the municipal office. Unfortunately, after the larva has emerged into adult mosquitoes, there aren't any biological controls that will work.
When early summer arrives, the Middlesex-London Health Unit (MLHU) monitors and controls vector mosquito species to reduce the spread of West Nile Virus (WNV) and other vector-borne diseases such as Eastern Equine Encephalitis (EEE). The MLHU performs surveillance and sampling at about 250 standing water sites located on public property throughout Middlesex-London. Visit their website to learn more about MLHU's Mosquito Surveillance, Control and Standing Water.
Larvicide Program 2025
February 4th, 2025
- All notices to landowners mailed out.
March 7th, 2025
- All objection letters due back to North Middlesex.
March 25th to June 30th
- First application will occur during this time period.
Spray Application Maps
Additional Resources
North Middlesex Area Boundary Maps
Learn More About BTI
Contact
If you require information in regards to the Mosquito Control Program, you may contact:
Kristyn Wilson, Public Works, Infrastructure and Drainage Clerk
Email: @email
Phone: (519) 294-6244 ext. 3219