News Flash


Posted on: September 12, 2019

Mosquito/EEE Update (9/11/2019)

Update on Aerial Spraying for EEE/ Field & Golf Course Closings – September 11, 2019

Please be advised that all Town of Natick athletic fields and Sassamon Golf Course will be closing at 6:00 pm each night until further notice due to the aerial spraying that is schedule to happen over the week.

At this time, the EEE Risk Level Category for the Town of Natick remains MODERATE, as determined by the MA Department of Public Heath. 

Public health officials are closely monitoring the situation, and the status will be reviewed with Commonwealth agencies.  The public health of our children and residents is paramount.  We appreciate everyone’s patience and understanding.  We will be removing restrictions at the first available opportunity. 

A detailed map of the planned spray areas is available online from MDAR at  To see exactly what areas were sprayed each night, please check back on the afternoon following the spray. The map will be updated as soon as the data is available. All scheduled spray are tentative as it is highly dependent on weather patterns and could change at the last minute. 

It remains critically important for people to continue to take personal precautions against mosquito bites. These steps include using EPA-approved bug spray, wearing long sleeves and pants outdoors to reduce exposed skin, and cancelling outdoor activities in the hours from dusk to dawn when mosquitoes are most active. 

For more information, please visit:

Residents with specific concerns about EEE and aerial spraying should contact the MDPH 24-hour hot line at 617-983-6800.

September 10, 2019

The Massachusetts Department of Public Health (MA DPH) and the Massachusetts Department of Agriculture Resources (MDAR) have announced additional aerial spraying for EEE in parts of Middlesex, Worcester, and Norfolk Counties.

This will begin this evening (9/10/19) and continue into next week.

The Town of Natick is included as part of the aerial spraying schedule for EEE in Middlesex County. While aerial spraying is weather and equipment dependent, the above average evening temperatures are likely to permit application.

The pesticide used for aerial spraying is Anvil 10 + 10, an EPA Registered product extensively tested and used in both ground-level and aerial spraying in the U.S. to control mosquitoes.

There are no health risks expected during or after spraying. There is no evidence that aerial spraying of Anvil 10+10 will exacerbate certain health conditions, such as asthma or chemical sensitivity.

More information on aerial spraying can be found on the MA DPH website

The spray is a contact spray that will reduce the mosquito population, but will not eliminate the threat. It is imperative that you apply personal protection listed below.

At this time, the EEE Risk Level Category for the Town of Natick remains MODERATE, as determined by the MA Department of Public Health.

Simple preventative measures you can take to reduce risk include:

  • Wear mosquito repellent when outdoors
  • Wear long sleeves and long pants when outside
  • Be aware that mosquitoes are most active between dusk and dawn.
  • Consider rescheduling any outdoor activities after 6:00 PM
  • Dump out any containers of standing water outside (don’t forget tarps, tires, buckets and birdbaths)
  • Keep windows closed, but if open, repair window screens if torn

The Natick Public School Department has also restricted outside field activities after 6:00 PM.

Trapping and testing is ongoing through the Central Massachusetts Mosquito Control Program and any results will be reported to the Natick Board of Health.  Please call the Natick Board of Health (508) 647-6460 if there are any other questions.

Further information can be found through the Central Massachusetts Mosquito Control Program on their website or by telephone at (508) 393-3055.

For additional information on aerial spraying:

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