FVRD mosquito control contractor Morrow Bioscience conducting larvicide treatment of breeding sites by helicopter near Chilliwack on May 27, 2014. (Morrow Bioscience)

Mosquito sites being monitored and mapped across the Fraser Valley

Don’t ask about spraying because there are no cities spraying or fogging for mosquito control

When the Fraser River runs high like it did this past spring, the nuisance mosquitoes tend to come out across the Fraser Valley a few weeks later.

When they start biting, some ask the perennial question of why officials don’t spray.

But staff with the Fraser Valley Regional District mosquito-control contractors, Morrow Bioscience Ltd., do not conduct pesticide spraying or fogging to kill flying mosquitoes – ever.

In fact, there are no municipalities in the Lower Mainland that spray for mosquitoes.

Instead they target them at the larval stage, before they hatch, with an environmentally friendly larvicide.

Every year hundreds of hectares of Fraser floodwaters get treated by Morrow Bioscience staff starting in May. They use a granular larvicide called Bti, dropped from a helicopter, or ladled into the water by hand. Technicians will also wade or paddle into swampy areas to treat them.

Morrow Bioscience staff have been busy monitoring, mapping, and treating known breeding sites this summer, according to FVRD officials. That will reduce but not “eliminate” all of the pesky mosquitoes, they said.

Someone moving to Chilliwack Mountain recently asked locals on a Facebook page how bad mosquitoes actually were on the north side of town.

Dana Drope replied to the original poster: “It’s always bad this time of year. Chilliwack is surrounded by water: Vedder river on one side, Fraser river on the other, various sloughs and creeks in between. If you buy a place near water you’re going to get mosquitoes.”

Residents can also help by removing breeding sites:

• Eliminate standing water;

• Chlorinate swimming pools;

• Empty wading pools; and

• Cover rain barrels with fine mesh.

FVRD has a hotline to answer questions or to report an abundance of mosquitoes 1-888-733-2333 or email mosquitoes@fvrd.ca

READ MORE: Mosquito control means killing larva

READ MORE: 2018 was a bad year for mosquitoes


Do you have something to add to this story, or something else we should report on? Email:
jfeinberg@theprogress.com


@CHWKjourno
Like us on Facebook and follow us on Twitter.

Want to support local journalism during the pandemic? Make a donation here.

EnvironmentFraser Valley Regional District

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Comments are closed

Just Posted

Guilty verdict for one of two men in large illegal marijuana grow-operation in Chilliwack

Charges dismissed against property owner where 3,200 plants, 32 kgs of dried weed found in 2017

B.C.’s major rivers surge, sparking flood warnings

A persistent low pressure system over Alberta has led to several days of heavy rain

Tourism Chilliwack rolls out mobile visitors’ centre in an RV called Winston

Part of an innovative recovery plan following the hit local tourism has taken from COVID-19

Search continues for person seen floating in Coquihalla River in Hope

Rescuers halted the search Thursday night as darkness fell

Missing Chilliwack woman has not been in contact with family for several months

The RCMP are asking for the public’s help in locating 35-year-old Chantelle Chenier of Chilliwack

PHOTOS: B.C.’s top doc picks up personalized Fluevog shoes, tours mural exhibition

Murals of Gratitude exhibit includes at least one portrait of Henry alongside paintings of health-care workers

Stop enforcing sex work laws during COVID-19, advocates say

There are provisions in Canada’s prostitution laws that make workers immune from prosecution, but not from arrest

Liberal party finished 2019 having spent $43 million, raised $42 million

All political parties had until midnight June 30 to submit their financial reports for last year

B.C. teacher loses licence after sexual relationships with two recently-graduated students

The teacher won’t be allowed to apply for a teaching certificate until 2035

White-throated sparrows have changed their tune, B.C. study unveils

Study marks an unprecedented development scientists say has caused them to sit up and take note

Greater Vancouver home sales start to tick up, with prices holding steady

Residential sales last month reached 2,443, a 64.5 per cent jump from May

Langley Lodge’s deadly outbreak declared over

Fraser Health and long-term care home administrator confirm Friday declaration

PHOTOS: South Surrey tractor project evokes ‘$1-million smile,’ helps connect neighbours

Retired Surrey firefighter Ron Henze began project for friend’s dad to fill time during pandemic

Most Read