Norristown Farm Park To Be Sprayed For West Nile Virus Monday Night

NORRISTOWN, PA — Norristown Farm Park will be sprayed with chemicals Monday night to help control the mosquito population and prevent the spread of West Nile Virus.

Spraying will take place from 8:15 p.m. to 11 p.m. All spraying will be within the park boundaries of the farm park.

The decision to spray was made after sampling revealed West Nile-carrying mosquitoes in various locations in the park.

Nearby residents should consider staying indoors during the spraying, county officials said, as well as closing windows and turning off ventilation systems.

County health workers will apply a spray called Duet Duel-Action adulticide from an all terrain vehicle ultra low volume sprayer.

The sprayer sends a mist into the air that kills mosquitoes on contact.

The adulticide breaks down with sunlight and leaves no residue behind. Officials say the spray, which contains sumithrin and prallethrin, is not harmful to humans, mammals, or plants when applied as intended by professionals.