The best way to control mosquitoes around your home is to get rid of places they breed.
- Don’t allow any outside water to stand for more than seven days.
- Cover rainwater barrels with mesh or screen.
- Drill holes in the bottom of any unused containers so water can’t collect.
- Remove or drain standing water from bird baths, discarded tires, flower pots, wheelbarrows, barrels or tin cans that are left outdoors.
Swimming or wading pools
- Immediately remove any water that collects on pool covers. Use a shop vacuum or other submersible pump to remove the standing water. For an above ground pool, siphon off the water using a hose. Someone at a hardware store can help you make an inexpensive siphon and explain how to use it.
- Make sure the pool’s pump is circulating water properly.
- Turn over wading pools when not in use.
- A larvicide product for domestic use containing Bti (Bacillus thuringiensis israelensis) can be purchased at hardware stores. Public Health encourages homeowners to remove the standing water rather than use a larvicide product. If you do use a larvicide, we recommend the product not be applied to the pool cover within two days prior of opening the pool. Please note: Product label instructions must be followed. Larvicide cannot be applied to catch basins or other waters that can drain off your private property.
Eaves and drains
- Clear leaves and twigs from gutter, storm and roof gutters throughout the summer.
- Make sure that drainage ditches are not clogged.
- Check flat roofs frequently for any standing water.
Yard and lawn
- Immediately throw away raked leaves and other decaying items such as apples or berries that fall from trees. If they aren’t being composted, place them in a closed container until you can dispose of them.
- Turn over compost piles on a regular basis.
- Fill in any low depression areas in lawns.
- Remove areas such as dense shrubbery where mosquitoes breed and rest.
- Let your neighbours know about potential mosquito breeding grounds on their property.
Inside your home
- Make sure door and window screens fit tightly and do not have holes.
- If there are no screens, keep doors and windows closed from early evening to dawn.
What about wetlands (i.e., swamps, and marshes)?
Wetlands do not pose a threat. Wetlands are systems that perform an integral part in the purification of surface and groundwater. They also maintain a fine balance of biological life that should not be disturbed by the use of pesticides or any other method of control for WNV.