Mosquito Control Activity Schedule

The Mosquito Surveillance Department of Vector Control is currently monitoring West Nile Virus activity on a daily basis through trapping and testing of mosquitoes. Additional trapping has been set up to suppress mosquito populations and curb the progression of the virus in Shelby County. In addition to surveillance activities, the larviciding crews have been active since March in all areas of Shelby County to target the mosquito populations in the beginning life stages.

As of July 23, 2021, mosquitoes positive for the West Nile Virus have been found in the following zip codes in Shelby County: 38016, 38126, 38134, 38107, 38127, 38114, 38118, 38112, 38053 and 38104.

The virus is expected to spread throughout the County by late fall.

Shelby County Health Department's Mosquito Control Program will conduct mosquito control activities, including truck-mounted spraying (adulticiding) of EPA-approved insecticides, weather permitting*, in portions of specific zip codes, according to the following schedule:

Week of August 2, 2021

Monday, August 2, 2021 38109, 38116
Tuesday, August 3, 2012 38127, 38107, 38108, 38128
Wednesday, August 4, 2021 38115, 38118, 38141, 37501
Thursday, August 5, 2021 38117, 38120, 38119, 38115, 38125

*To ensure the insecticide is most effective, the scheduled spraying will be canceled if any of the following weather conditions are present for a majority of the spray schedule time:
  • Rain chance of 65% or greater
  • Wind speeds 11mph or greater
  • Temperature less than 60 degrees Fahrenheit 
Because the presence of West Nile Virus has been confirmed in Shelby County, the Shelby County Health Department urges all residents to take precautions to protect themselves and their loved ones from mosquito bites. We call these precautions the 4 D’s:
  • DEFEND yourself by using insect repellent with DEET. Follow label instructions.
  • DRESS in long sleeves and pants. Wear loose and light colored clothing when outdoors.
  • DUSK/DAWN is the time when mosquitoes are most active. Stay indoors.
  • DRAIN standing water and install or repair window screens.

Shelby County residents are valuable partners with public health in the fight against mosquitoes.  Eliminating mosquito-breeding sites around homes and businesses is crucial to controlling our mosquito problem.  Any object that collects rainwater is a potential breeding ground for mosquitoes.

The Health Department encourages all residents to take the following measures to control mosquito populations around their homes and businesses:

  • Clean rain gutters and downspouts
  • Discard old tires or store inside where rain water cannot collect inside of tires
  • Discard tin cans, buckets – any container that might collect water
  • Empty and refill pets’ water bowls at least every few days
  • Empty, clean and refill birdbaths, “drip plates” underneath flower pots and small wading pools weekly.