State Spraying for Mosquitoes at Pachaug State Forest to Reduce EEE, West Nile Threat

The state is spraying in areas that have high concentrations of mosquitoes that tested positive for EEE and West Nile.

The state is spraying for mosquitoes in parts of Pachaug State Forest considered at high risk for Eastern Equine Encephalitis (EEE) virus and West Nile virus.

The spraying is happening in the Mt. Misery campground, and the Horse, or Frog Hollow Horse Camp, as well as roads from the main entrance to Hell Hallow Road. Spraying started Monday at 7 p.m. and will continue overnight. Roads will be closed during the spraying.

The state closed campgrounds earlier this month over EEE concerns.

These areas have high concentrations of mosquitoes that have tested positive for EEE and West Nile. EEE is rare, but it can be deadly in humans and horses. West Nile is found in Connecticut most summers and cause serious disease in humans and horses.

The state is using a pesticide called Anvil, which contains the active ingredient d-phenothrin, or sumithrin. Department of Energy and Environmental Protection officials said it is similar to the ingredients used in indoor pesticides and many common products for spraying for fleas and flying insects.

The areas being sprayed are not residential and nearby residents do not need to take precautions, officials said.

Spraying will reduce the risk of contracting EEE and West Nile, but not completely eliminate the risk. Anyone spending time in the area should take precautions to avoid being bitten, including:

  • Minimize time outdoors at dusk and dawn.
  • Be sure door and window screens are tight fitting and in good repair.
  • Wear shoes, socks, long pants, and long-sleeved shirts. Clothing material should be tightly woven.
  • Use mosquito netting when sleeping outdoors.
  • Consider using mosquito repellent when it is necessary to be outdoors and always use them according to label instructions. The most effective repellents contain DEET or Picaridin. Oil of lemon eucalyptus is also effective for brief periods of exposure.
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