Mosquito and Tick Information

mosquito on a leaf

Mosquito and Tick Control and Related Health Concerns


Please note that the process to request exclusion from mosquito spraying has changed as of March, 2017.

All requests for mosquito spray exclusion must go through the Massachusetts Department of Agricultural Resources (MDAR) via the downloadable form or the online request portal at the MDAR Website.

Residents are no longer required to send a certified letter to the Town Clerk to request mosquito spray exclusion.

Please click here to visit the MDAR website with information, downloadable form and online request portal.

  • Click here to read the 2019 Best Management Practice Plan
  • Click here to read the 2019 NEMMC Integrated Pest and Vector Management Plan
  • Click here to read 2018 NEMMC Best Management Practice Plan
  • Click here to read the 2018 NEMMC Integrated Pest and Vector Management Plan


Precautions against Mosquito-Borne illness:
  1. Be aware that mosquitoes are most active between dusk and dawn. Take precautions to minimize exposure during these hours.
  2. Long sleeves and long pants can minimize risk of mosquito bites.
  3. Insect Repellents including DEET (N, N-diethyl-m-toluamide), permethrin, picaridin (KBR 3023), IR3535 or oil of lemon eucalyptus [(p-methane 3, 8-diol (PMD)] should be used according to directions.

NOTE: DEET products should not be used on infants under 2 months of age and should be used in concentrations of 30% or less on older children. Oil of lemon eucalyptus should not be used on children under three years of age. Permethrin Products are intended for use on items such a clothing, shoes, bed nets and camping gear and should not be applied directly to the skin.

       4. Remove standing water in your yard where mosquitoes may breed.

  • Topsfield's Risk Level for West Nile remains MODERATE.
  • Topsfield Board Of Health’s approach remains on surveillance and education.

Links to Information On Mosquitoes and Mosquito-Borne Illness:

Tick Borne Disease