Mosquito Control in Ajax
If you need mosquito control in Ajax, AstraHive Pest Control offers licensed treatment backed by a 90-day warranty. Standing water on your own Ajax property is what public larviciding programs do not reach.
West Nile virus and mosquitoes: what Durham Region Health Department reports
- Durham's 2026 West Nile program began between May 11 and June 8, with larval surveillance, larvicide in catch basins and surface water sites, and adult mosquito trapping across the region.
- Residents can ask the Health Department to treat private property catch basins with larvicide through an online application at durham.ca/BYCBlarvicide, and report stagnant water on public property at durham.ca/ReportStagnantWater.
Water on your Ajax 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 Oshawa WPCP station at 20.6 °C, with 3.8 days a year above 30 °C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean daily maximum (°C) | -1.1 | 0.1 | 4.2 | 10.8 | 16.9 | 22.3 | 25.1 | 24.3 | 20.2 | 13.3 | 7.4 | 2.1 |
| Total precipitation (mm) | 66 | 57 | 54 | 73 | 79 | 74 | 73 | 77 | 94 | 70 | 85 | 71 |
| Days with rain of 0.2 mm or more | 6 | 5 | 8 | 12 | 13 | 11 | 11 | 11 | 12 | 13 | 13 | 8 |
Environment and Climate Change Canada climate normals, 1981 to 2010, Oshawa WPCP station (15.1 km from Ajax). A station is the nearest one with a full set of normals, not a reading from your street.
- All buildings, and the exterior portions of buildings, must be kept free of pest infestation such as rodents, vermin, birds, termites and insects at all times.
- The interior of dwellings and the common areas of buildings with multiple dwelling units must be kept free of all pests such as rodents, vermin, birds, termites and insects.
We also serve Pickering, Seaton, Whitby, Brooklin, Oshawa.
- Climate station: Oshawa WPCP, 15.1 km from Ajax.
- Public health unit: Durham Region Health Department.
- By-law: Property Standards By-law 46-2017.
- Nearby areas we serve: Pickering (5 km), Seaton (7 km), Whitby (8 km), Brooklin (13 km), Oshawa (13 km).
Mosquitoes in your Ajax home or building?
Our licensed technicians start with an inspection and a clear plan for your property.
Call 905-925-8427How AstraHive Pest Control gets rid of mosquitoes in Ajax
- 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.
West Nile virus and mosquitoes in the news near Ajax
As of 17 September 2026
Durham's season total was 41 positive mosquito pools from 32,105 mosquitoes trapped at 16 sites. Ajax had 14 positive pools. Source: Durham Region: adult mosquito surveillance
Private yards in Ajax
65% of homes in Ajax 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 Ajax. Shares of occupied private dwellings.
How wet it gets near Ajax
Environment and Climate Change Canada climate normals 1981 to 2010, Oshawa WPCP station, 15.1 km from Ajax. 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.
More on mosquitoes for Ajax homeowners
- Mosquito eggs hatch into larvae within one to two days, and the whole life cycle can take under ten days at 22 to 27 degrees Celsius. (Health Canada: mosquitoes)
- Change the water in bird baths and outdoor pet dishes at least twice a week. (Health Canada: mosquitoes)
- Clean gutters regularly so water does not collect and breed mosquitoes. (Public Health Agency of Canada: preventing West Nile virus)
- Between 70 and 80 per cent of people infected with West Nile virus have no symptoms at all. (Public Health Agency of Canada: West Nile virus symptoms)
Areas near Ajax that we also serve
| Page | Distance from Ajax | Direction |
|---|---|---|
| Mosquito control Pickering | 5 km | west |
| Mosquito control Seaton | 7 km | northwest |
| Mosquito control Whitby | 8 km | northeast |
| Mosquito control Brooklin | 13 km | north |
| Mosquito control Oshawa | 13 km | northeast |
| Mosquito control Cornell | 16 km | west |
Straight-line distances between area centres, rounded.
Frequently asked questions: Ajax
How warm does Ajax get in July?
The Oshawa WPCP station's July mean is 20.6 degrees Celsius, with about 3.8 days a year above 30 degrees Celsius.
When does mosquito season start and end?
Activity follows warm weather. Treatment programs typically run monthly from May through September. OpenStreetMap maps water near the centre of Ajax, including Duffins Creek, and damp ground near water suits mosquitoes.
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.
Sources
- Town of Ajax: Property Standards By-law 46-2017 . sections 4.12 to 4.14, pest prevention
- Tribunals Ontario, Landlord and Tenant Board: Maintenance and Repairs . landlords must control pests such as cockroaches and mice; municipal standards
- Region of Durham: Tenant rights in Ontario regarding bed bugs . landlord and tenant roles, notice, licensed companies
- Region of Durham: Check&GO! Durham . published inspection results
- Region of Durham: Health Department begins 2026 West Nile virus surveillance program . 2025 cases, program dates, private catch basins
- Environment and Climate Change Canada: Canadian Climate Normals 1981-2010 . monthly temperature, precipitation, frost days and degree-days
- Durham Region: adult mosquito surveillance
- 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