05/28/2013 05:36 EDT | Updated 07/28/2013 05:12 EDT

Gypsy moth spraying on Thursday and Friday

Toronto is going to do a second round of aerial spraying to try to get rid of gypsy moths.

The low-level sprayings will happen on Thursday and Friday, weather permitting.

"Infestation levels reached a point where manual control methods such as egg scraping, sticky traps, and ground spraying of pesticides are no longer effective in controlling the Gypsy Moth population," said a statement from the city.

Areas of Etobicoke will be targetted on Thursday:

- Humber Valley Golf Course

- Valecrest Road and North Drive

- The Kingsway — Edenbridge Drive

- Thorncrest Road

- Herne Hill

- Princess Margaret Boulevard — Kipling Avenue

- Royal York Road and The Kingsway

On Friday the spraying will shift to the east:

- Moore Park

- Cherry Beach Park

- Toronto Island Park

- Tam O'Shanter Golf Course

The spraying will take place between 5 and 7 a.m., both days.

The pesticide being used "is not considered a health risk to humans," the city said.

Residents within the affected spray zones are encouraged to check for updates on the City's website at or by calling 311 (1-855-551-5150 if calling from outside Toronto).