Cass County Vector Control is announcing mosquito samples are testing positive for West Nile Virus.
Five of approximately 30 samples tested positive for West Nile Tuesday. All three locations were in the southwest Fargo-Moorhead metro — Anderson, Osgood and Horace.
According to Cass County Vector Control’s website, due to significant recent rains, conditions in most areas are expected to be difficult for the next week to 10 days.
The Cities of Fargo, West Fargo and Moorhead will have its first round of truck-mounted spraying beginning at 8pm tonight. Multiple rounds of adult mosquito control treatment will be necessary and in some cases will provide little to no relief in the short term.
The active ingredient in the ULV (Ultra Low Volume) spray is permethrin or etofenprox. These insecticides are labeled for use in residential areas and are found to be non-toxic to humans and pets.
During this time, Cass County Vector Control says to be prepared to take additional precautions especially at dawn and dusk including: wearing long sleeves and pants, applying a DEET containing repellent, or avoiding outdoor activity.