Mosquitoes carry infectious diseases that can be dangerous such as Zika and West Nile.
Health officials say in the past, mosquitoes in East Texas have tested positive for West Nile, but we've only had travel related Zika cases in East Texas.
A Marshall Public Services official tells me they have spotted mosquitos early and spraying is now underway.
They will spray within the city limits of Marshall. This includes every main street and neighborhood. Officials say they will spray between 2 am and 6 am.
For the people I spoke with in Marshall this is good news.
Natasha Woodrow is a mother who is concerned about her son being bit by a mosquito. She says she is glad the city of Marshall is spraying repellent.
Public Services Director J.C. Hughes encourages everyone to also use preventive measures against the pests.
Some tips for protecting yourself: Don't forget to apply insect repellent with Deet, wear long sleeve clothing and get rid of standing water and try to not stay out after dusk.
In Marshall, you can also request spraying near where you live. Hughes says the chemicals used are environmentally friendly.