Mosquito Control in Keswick
If you need mosquito control in Keswick, AstraHive Pest Control offers licensed treatment backed by a 90-day warranty. Standing water on your own Keswick property is what public larviciding programs do not reach.
How AstraHive Pest Control gets rid of mosquitoes in Keswick
- Find the breeding zones: gutters, low-lying areas, ornamental ponds and bird baths first.
- Larvicide on standing water that cannot be drained.
- Residual treatment on dense foliage, shaded resting zones and foundation and perimeter edges.
- Monthly follow-up from May through September, if you want it.
Products are Health Canada approved and applied according to the product label, and our technicians are licensed by the Ontario Ministry of the Environment, Conservation and Parks (MECP). Our standard 90-day warranty applies to our treatments, and your technician confirms the terms for a seasonal mosquito program when you book.
Private yards in Keswick
Keswick is part of Georgina, so these are Georgina figures. 83% of homes in Georgina are detached houses with private yards. Gutters, planters, tarps and bird baths on a private lot are breeding sites that public larviciding does not reach.
Source: Statistics Canada, 2021 Census, private households in Georgina. Shares of occupied private dwellings.
Mosquitoes in your Keswick home or building?
Our licensed technicians start with an inspection and a clear plan for your property.
Call 905-925-8427More on mosquitoes for Keswick homeowners
- West Nile virus is usually spread by a mosquito that has fed on an infected bird. (Public Health Agency of Canada: how West Nile virus spreads)
- Old tires, rain barrels, children's toys and flowerpots all hold water that breeds mosquitoes. (Public Health Agency of Canada: preventing West Nile virus)
- Loose clothing made of tightly woven fabric helps protect against bites. (Health Canada: mosquitoes)
- Severe West Nile infection can affect the brain and spinal cord, with sudden severe headache, high fever, neck stiffness and confusion. (Public Health Agency of Canada: West Nile virus symptoms)
Water on your Keswick property, and when mosquitoes breed
Public programs treat public catch basins and surface water; gutters, buckets, tarps, ornamental ponds and bird baths on a private lot are separate. July is the warmest month at the Cookstown station at 19.6 °C, with 8.2 days a year above 30 °C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean daily maximum (°C) | -3.5 | -2.0 | 2.9 | 10.9 | 18.0 | 23.4 | 25.8 | 24.8 | 20.2 | 13.2 | 5.9 | -0.3 |
| Total precipitation (mm) | 56 | 53 | 53 | 65 | 76 | 80 | 70 | 80 | 81 | 73 | 80 | 60 |
| Days with rain of 0.2 mm or more | 5 | 4 | 8 | 12 | 14 | 12 | 12 | 13 | 14 | 16 | 13 | 7 |
Environment and Climate Change Canada climate normals, 1981 to 2010, Cookstown station (19.4 km from Keswick). A station is the nearest one with a full set of normals, not a reading from your street.
- Every premises must be kept reasonably free of rodents, vermin and insects at all times.
We also serve Georgina, Sutton, Innisfil, East Gwillimbury, Holland Landing.
- Climate station: Cookstown, 19.4 km from Keswick.
- Public health unit: York Region Public Health.
- By-law: Property Standards By-law 98-106.
- Nearby areas we serve: Georgina (6 km), Sutton (10 km), Innisfil (11 km), East Gwillimbury (15 km), Holland Landing (17 km).
Keswick's warm months at a glance
Environment and Climate Change Canada climate normals 1981 to 2010, Cookstown station, 19.4 km from Keswick. A station is the nearest one with a full set of normals, not a reading from your street.
What this means for mosquitoes: breeding follows warmth and standing water, so the warm and wet months on this chart set the season.
Areas near Keswick that we also serve
| Page | Distance from Keswick | Direction |
|---|---|---|
| Mosquito control Georgina | 6 km | north |
| Mosquito control Sutton | 10 km | northeast |
| Mosquito control East Gwillimbury | 15 km | south |
| Mosquito control Holland Landing | 17 km | south |
| Mosquito control Bradford | 17 km | southwest |
Straight-line distances between area centres, rounded.
Frequently asked questions: Keswick
How warm does Keswick get in July?
The Cookstown station's July mean is 19.6 degrees Celsius, with about 8.2 days a year above 30 degrees Celsius.
How do I reduce mosquitoes around my yard?
Drain standing water in gutters, bird baths and low spots, and use larvicide on water that cannot be drained. Residual treatment goes on shaded foliage and foundation edges. OpenStreetMap maps water near the centre of Keswick, including Maskinonge (Jersey) River, and damp ground near water suits mosquitoes.
Why are there more mosquitoes after rain?
Rain fills containers, gutters and ditches, which become breeding sites within days.
Sources
- Town of Georgina: Property Standards By-law 98-106 . abatement of nuisances: vermin, rodents and insects
- Tribunals Ontario, Landlord and Tenant Board: Maintenance and Repairs . landlords must control pests such as cockroaches and mice; municipal standards
- York Region: YorkSafe Inspection Reports . published food premises inspection reports
- York Region: West Nile Virus . 34 traps, positive traps by municipality, private catch basin treatment
- Environment and Climate Change Canada: Canadian Climate Normals 1981-2010 . monthly temperature, precipitation, frost days and degree-days
- York Region: mosquitoes test positive for West Nile virus
- York Region: first human West Nile case of 2026
- Statistics Canada: structural type of dwelling by tenure, 2021 Census (table 98-10-0240-01) . dwelling types and renter households
- Statistics Canada: dwelling condition by period of construction, 2021 Census (table 98-10-0233-01) . age of homes and repair needs