Norfolk County Mosquito Control Project Will Spray in Walpole During the Evening Now

Starting in late May, early June, the Norfolk County Mosquito Control District will begin conducting ULV aerosol applications in the evening, not in the early morning as in past years. 

In the town of Walpole applications will be conducted on Tuesday evenings commencing after sunset. These applications will continue to be conducted with the same product as in past years – one that presents a miniscule risk to human health and the environment. 

“EPA's October 2011 Pyrethrins/Pyrethroid Cumulative Risk Assessment indicates that exposures from the many current uses of pyrethrins and pyrethroid insecticides do not pose risk concerns for children or adults,” according to the announcement.

David Lawson, Director of the Norfolk County Mosquito Control District said:

“The decision to move to an evening spray schedule is driven by science. Mosquito biology and weather conditions, taken together, indicate that the use of an evening application will be the most effective at controlling nuisance and disease carrying mosquitoes and therefore the best use of our resources.”

Residents will continue to be able to find out if their street is being sprayed, by entering their address on an interactive map on the NCMCD website http://www.norfolkcountymosquito.org/ULV_Schedule.html or by calling 617-582-6216 after 3:30 p.m. each afternoon.

"This will be a big change for residents because most residents do not see the spray trucks but since they will be out starting after sunset, more residents will be seeing them. The product that they use do not pose risk concerns for children or adults and is the same product that they have used last year," Walpole Health Director Robin Chapell said in an email.