West Nile in Callaway County
Experts also encourage removing old tires and cleaning up standing water to eliminate breeding grounds for mosquitoes, which can carry West Nile.
"If you have a pond, make sure you don't have any muck around the edges of your pond," said Communicable Disease Nurse Jennifer Schmidt. "Make sure the reeds are cleaned up and, if you have bird baths, change the water. If you have recycling bins and that sort of thing, just drill some small holes in the bottom to allow for drainage."
The health department said mid-Missouri has not had any heavy frost yet this fall, so the West Nile risk remains.