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The original item was published from 4/22/2021 2:02:00 PM to 4/30/2021 4:00:05 PM.

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3 - Board of Health

Posted on: April 15, 2021

[ARCHIVED] Chelmsford Aerial Mosquito Larviciding - April 2021

Public Health

cid:image001.jpg@01D39450.7F120BE0                           CHELMSFORD BOARD OF HEALTH 


                                               Chelmsford Aerial Mosquito Larviciding

                                     Date Change: Now this Saturday April 24, 2021


The Central Mass Mosquito Control Project will be conducting its annual aerial larviciding program in Chelmsford on Saturday, April 24th.  Pellets are distributed in wetland and ponding areas by helicopter.

This aerial application has taken place in Chelmsford for the past 16 years. The application is designed to reduce mosquito emergence in May and June. The product that is used is Bti, a natural bacteria that is certified organic and is non-toxic to humans, pets, and other wildlife. 

Maps and other information are on the Central Mass Mosquito Control website, ( under “Seasonal Updates” as well as on the town website (

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