Generally local government does not use adulticiding (fogging to kill adult mosquitoes) as a method for mosquito reduction. Adulticiding is ineffective in our area given the large distance (~10km) that the mosquito species travel. The most effective method to manage mosquitoes is to use a larvicide directly into water breeding site. Adulticiding is generally used at times of very high disease risk or when mosquitoes are in extreme numbers, often following a natural disaster event.
Adulticiding is non-specific, that is, it kills other beneficial organisms such as bees, dragonflies etc. Fogging must be planned as it is heavily dependent on weather conditions, winds of less than four knots is required to prevent the product drifting over sensitive wetlands and water bodies. Some adulticide chemicals are lethal to aquatic life, especially fish and can be toxic to birds.
Safe Use of Pesticides
Fogging may cause eye and respiratory irritation to humans. Some chemicals require a licensed pest control operator.
All chemicals used must be in accordance with the label. The label provides instructions to safely apply the chemical and advice to minimise adverse potential effects such as spray drift onto neighbouring properties. Also refer to https://www.healthywa.wa.gov.au/Articles/U_Z/Using-pesticides-safely
Fogging by Individual Property Owners
Fogging has no residual effect; so fogging will not affect emerging adults. A residual spray approved for mosquitoes in semi-enclosed outdoor entertaining areas may achieve better results. For all of these reasons, the Geographe CLAG DOES NOT support individual property owners fogging.
For further information please speak to your local Environmental Health Officer