Mosquito Control

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The following is a legal notice.


The East Middlesex Mosquito Control Project will be controlling mosquitoes using truck mounted aerosol sprayers in neighborhoods of Waltham on Tuesday, July 21st between dusk and 11:30 PM.  Areas to be sprayed are located near Bacon St. between Plympton St. and Curve St.  Spraying will also be done in areas near Marlborough Rd., Briarwood Rd., Kingston Rd., Sheffield Rd., Hardy Pond Rd., Graymore Rd., Hibiscus Ave., Smith St. and Christopher Rd.   


The Project sprays for mosquitoes using the pesticide, sumithrin, in a product called Anvil.  Sumithrin is a pyrethroid that is classified as slightly toxic by the EPA.  Mosquito control applications of sumithrin do not pose a significant risk to people or their pets due to the low toxicity of sumithrin and the small amount used to control mosquitoes.  As with any pesticide, people should minimize exposure.  If residents see a spray truck approaching, they are advised to go indoors for a few minutes while the spray dissipates.  Residents are also advised to close any windows facing the street.  Beekeepers do not need to take any special precautions since spraying begins after dusk.


Information on the spray schedule is available via a recorded message at 781-893-5759 and at the Project’s website at  If residents have any questions related to spraying or any questions on mosquitoes, contact the East Middlesex Mosquito Control Project at 781-899-5730.



Waltham Partners with:  The East Middlesex Mosquito Control Project

Questions on pesticide applications by the East Middlesex Mosquito Control Project can be answered by calling 781-899-5730. Questions on the exclusion process, which is based on regulation 333 CMR:13:04 of the Massachusetts Pesticide Board, can be answered by calling 617-626-1784.

Waltham residents who would like to exclude their property from mosquito control spraying next summer should submit the following application to the Waltham City Clerk. (****Firefox users may require additional end user steps to print or submit this form by email.****)


Mosquito Control Exemption Notice