LEONARD, TEXAS -- When Andy McAngus started his business, he only did termite and pest control.

But now, he's revving up his mosquito fogger quite often.

"We do towns and cities, we do golf courses, we mosquito fog for events, private areas," McAngus said.

One of Andy's biggest set of clients: Texoma towns.

"It's people we know and have long-standing relationships with, so we kind of enjoy taking care of them as well," McAngus said.

Andy's business, Noble Resources, sprays pesticide to kill mosquitoes in a handful of local cities.

Van Alstyne is one of their most recent customers.

"We've been spraying for years. We have a relationship with Noble Resources. They've been taking care of us for years," Van Alstyne City Manager Frank Baker said.

Van Alstyne paid them $600 dollars to...

"Do the mosquito fogging. Also, there's larva sighting. And then educating the public and making sure there's no standing water on people's properties," McAngus said.

Andy says the chemicals he uses are approved by the EPA.

"Pesticide is mixed with an oil. A very thin oil. It goes through this machine and it's blown out in tiny, tiny particles. And that's what makes it appear to be fog," McAngus said.

So far this year, along with Van Alstyne, Andy has sprayed for: Leonard, Honey Grove, Dodd City, Ladonia, Howe and Windom.

Two cities that won't be sprayed: Sherman and Denison.

Sherman and Denison public works officials say they haven't sprayed for years and don't plan to yet.

Baker says for their city, spraying is preventative.

"We want to be on the front end. That's why we've been doing it for years. Try and reduce the risk. Try and make it a safe place to be," Baker said.