Mosquito Control

Monitoring of mosquitoes takes place from May until September.

A one-kilometre buffer zone around the City is monitored and larvae are counted using a dipper cup in stagnant water.

Areas temporarily subject to higher population due to heavy rains are more likely to be potential problem areas compared to permanent water bodies because permanent areas have established predators.

The Parks Department regularly checks these sites and track larvae counts and stages. When larval dip yields 25, spraying of larvicide commences. The Parks Department only sprays for larvae not adult mosquitoes. The chemical of choice is a biological control called Vectobac. It is a very safe and only harms mosquito larvae. A follow-up evaluation of the area is made within four days.