Rains combined with warm weather make conditions favorable for mosquito breeding. Mosquitoes can breed in any standing water if it lasts at least seven days.

“Our main focus is to reduce the risk of mosquito-borne disease,” Joe Harrod, Director of Environmental Health, said.

For Updates on Zika virus, please visit the CDCs website

Mosquitoes Facts

Mosquitoes can live indoors and outdoors, and some species bite during the day while others bite at dusk and dawn.

Below are some tips to avoid mosquito bites and prevent mosquito-borne diseases:

  • If you are outdoors when mosquitoes are most active, be sure to wear long pants, a long-sleeved shirt, shoes, and socks.
  • Wear light-colored clothing, which is less attractive to mosquitoes.
  • Use EPA-registered mosquito repellent and apply according to the label directions.
  • Wear clothing and gear treated with repellant.
  • Install or repair screens on windows and doors to keep mosquitoes out of your home.

Breaking News: West Nile Virus Detected in Richland County (6/27/18)

Richland Public Health officials have been notified by the Ohio Department of Health, that West Nile Virus (WNV) has been detected in mosquitoes in Mifflin Township.

“To be very clear, this is not a human infection case, but our first positive WNV mosquito sample this year,” Joe Harrod, Director of Environmental Health at Richland Public Health, stated. Health Department officials have already sprayed the WNV positive area to discourage transmittal of the mosquito-borne illness to residents.

“This was not unsuspected,” Harrod went on to say. “We had our first positive about this same time last year and we’ve been trapping more mosquitoes to send for testing.”

West Nile Virus is a mosquito-borne virus where human symptoms are generally mild and often mimic the flu.  See WNV Symptoms below. The best way to prevent West Nile Virus is to prevent mosquito bites. See Take Precautions below

Richland Public Health’s Mosquito Control Program conducts surveillance, treats, and sprays throughout the season to monitor mosquito populations and mosquito-spread disease throughout the county.  Residents are encouraged to eliminate standing water and take precautions to protect themselves and loved ones from mosquito bites.


Take Precautions

Richland Public Health officials are encouraging all Richland County residents to take precautions to protect yourself and your family from mosquito bites and to reduce mosquito breeding sites near your home:

  • Recycle all unused tires or make sure they are not holding water. Each tire can become a breeding area for thousands of mosquitoes.
  • Eliminate all water-holding containers, such as tin cans and unused flower pots, from your property.
  • Eliminate or drain water features or areas on your property where standing water lasts more than seven (7) days.
  • Make sure all roof gutters are clean and drain properly.
  • Clean and chlorinate pools, outdoor saunas and hot tubs.  Keep them empty when not in use and drain water from pool covers.
  • Change water in birdbaths weekly.
  • Change water in kiddie pools regularly and eliminate standing water that collects around the edges of the pools.

Richland Public Health conducts mosquito trapping and surveillance to know what areas are experiencing increased exposure and to identify the types of mosquitoes present.

In addition to trapping and surveillance, Richland Public Health conducts mosquito spraying, weather-permitting. During the active mosquito season those sprayings events are posted every Friday on the Richland Public Health website, Facebook and Twitter.

What Are the Symptoms of West Nile virus? 

  • Serious Symptoms in a Few People. About one in 150 people infected with WNV will develop severe illness. The severe symptoms can include high fever, headache, neck stiffness, stupor, disorientation, coma, tremors, convulsions, muscle weakness, vision loss, numbness and paralysis. These symptoms may last several weeks, and neurological effects may be permanent.
  • Milder Symptoms in Some People. Up to 20 percent of the people who become infected have symptoms such as fever, headache, and body aches, nausea, vomiting, and sometimes swollen lymph glands or a skin rash on the chest, stomach and back. Symptoms can last for as short as a few days, though even healthy people have become sick for several weeks.
  • No Symptoms in Most People. Approximately 80 percent of people (about 4 out of 5) who are infected with WNV will not show any symptoms at all.
  • Anyone bitten by an infected mosquito could become ill. Children under age 16 are at greater risk of infection for La Crosse encephalitis.  Symptoms for La Crosse encephalitis are similar to those above but children under age 16 are more likely to develop severe illness. Symptoms may occur five to 15 days after a bite.

For additional  information on mosquitoes you can also call Environmental Health at 419-774-4520.

2017 Vector Annual Report

A comprehensive yearly review of the Richland Public Health Vector Control Program

Mosquito Spraying 2018

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Spraying schedule is listed after the “Preventing Mosquito Bites” information below:

Preventing Mosquito Bites

Mosquitoes lay their eggs in standing water, which includes puddles, stagnant ditches, and containers such as old tires, buckets, cans, neglected swimming pools and flower pots. Mosquitoes can carry diseases, including West Nile Virus, which can cause serious illness. It is important to apply mosquito repellent when participating in any outdoor activity when mosquitoes are active.

Richland Public Health recommends following these tips to help avoid mosquito bites:

  •  Make sure that doors and windows have tight-fitting screens.
  • Repair or replace all torn screens in your home.
  • Remove all discarded tires from your property.
  • Dispose of tin cans, plastic containers, ceramic pots, or similar water-holding containers.
  • Make sure roof gutters drain properly. Clean clogged gutters in the Spring and Fall.
  • Clean and chlorinate swimming pools, outdoor saunas, and hot tubs. If not in use, keep pools/saunas empty and covered.
  • Drain water from pool covers.
  • Change the water in birdbaths at least once a week.
  • Turn over plastic wading pools and wheelbarrows, etc. when not in use.
  • Clean ditches of obstructions so they drain properly.
  • Eliminate any standing water that collects on your property.
  • Check trees for cavities that hold water and fill them with soil, gravel, or sand.
  • Remind or help neighbors to eliminate breeding.


Richland Public Health Mosquito Spraying Schedule

RPH Mosquito Spraying Schedule: October 1 – 5, 2018

Richland Public Health will be conducting mosquito spraying, weather permitting, in the following locations during the week of October 1 – October 5:

  • October 1 – South of Noble Rd. W., North of Free Rd., East of Bowman St., West of Brenneman Rd., Shiloh Village. Rain date October 2-5.
  • October 1 – South of Wharton Rd., North of Reynolds Rd., East of Reynolds Rd., West of Franklin Church Rd., Bloomingrove Township. Rain date October 2-5.
  • October 2 – South of Mill Rd., North of Pershing Ave., East of W. Henry St., West of Steven Dr., Butler Village. Rain date October 3-5.

All spraying will be conducted before dawn. This schedule is subject to change.

 Any schedule changes will be posted on the Richland Public Health social media and/or website.


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