Pest Control Without Harsh Chemicals

Local small business owner has found a way to keep mosquitos at bay with natural remedies

Geoff Krstovic, a former firefighter, transitioned into the mosquito control business after a divorce, driven by the desire for flexible work.

“Nobody ever thinks they’re going to be into bugs and chemistry when they grow up,” he said. “It’s not like, ‘I want to be a firefighter. I want to be an astronaut.’ Nobody thinks that they want to go out there whacking bugs or says, ‘I want to be in pest control.’”

But as he progressed in his new career, Krstovic took an interest in how to get rid of pests without using harsh, man-made chemicals.

“The more certifications, the more promotions and everything that I got, [and] the more entomology classes I started taking, … I really started to realize what we were putting out into the environment,” he said.

“I spend 90% of my time outside, and I see so much wildlife. So, when I would see a deer eating a leaf or a rabbit run out of bushes that I just treated, it really made me start to think about the effects of what we were doing to them.”

Not to mention pollinators like bees and butterflies.

“When I [would finish a treatment], I’d look back at the yard and everything that I’d seen flying around was just gone,” he said.

As a parent and a pet owner, he knew there had to be a better way to get rid of pests but still safeguard ourselves and the animals around us.

With a growing concern for the environmental impact, he developed a natural mosquito treatment system. The company he was working for wasn’t interested in his new product, so he started his own business.

Road to pest control

Krstovic graduated from Georgia State with a major in English. He joked that many of his contemporaries in the field have similar backgrounds.

“There’s an ongoing joke in the pest community where it’s like … what do you go to college [for] to be a pest [control] owner? Well, you major in liberal arts, English or writers’ composition,” he said.

“A lot of the other owners I met had the same degrees. A big part of it is that creativity aspect, and in pest control, you’re allowed to think outside the box, and you’re allowed to adjust and adapt to what you’re seeing and use different methods.”

That desire to do things differently led him to find a way to help keep people safe from West Nile, Zika virus and Eastern equine encephalitis while they enjoyed time outdoors.

With a lot of research and a little help from relatives with backgrounds in chemistry and engineering, he came up with a formulation based on using essential oils.

The dangers of mosquitos

“After you meet your first client that tells you about their experience just walking to a mailbox and they get West Nile, it changes your perspective 100%,” Krstovic said, “because you’re not just out there killing bugs, you’re out there protecting people and their families.”

Mosquitos are often called the most dangerous animal on earth, with the diseases they spread killing over a million people annually according to statistics from the World Health Organization and Centers for Disease Control.

While the more serious mosquito diseases don’t pose the greatest risk to most communities, there are common ailments that can show up in people and pets, including bites that get infected and heartworm in dogs.

Reaching out to the community

Though people were a little skeptical about Krstovic’s natural pest control methods at first, Erin Rhatigan decided to give it a try.

“Geoff cold-called our house in 2021 and revealed that he actually grew up in the house next door,” she said. “He really wanted to return to his roots and offer his services.”

Rhatigan has three young children, and with her home being situated on the Chattahoochee River, the outdoor areas are beautiful, but also plagued by a lot of mosquitos.

“We’re very focused on spending time outside, and our kids are very, very active, so they’re outside a lot,” she said.

But Rhatigan and her kids are also very sensitive to mosquito bites, and the spraying services she tried year after year weren’t satisfactory.

“I had gone through every franchise. I had used the large companies every season. I was switching because it seemed like it would be effective at the beginning, and then it would lose effectiveness,” she said.

She was also concerned about the toxicity of the chemicals being used.

“I felt like using toxic chemicals on our property was not only bad for our family, but because we are on the river, we’re kind of a steward to the environment as well, … so when he mentioned that the product that he uses to control the mosquitoes was eco-friendly, I was happy to try it,” she shared.

Local solution gets a local investor

The treatment was so effective that Rhatigan isn’t just a customer, she and her husband decided to invest in the business.

“It was better than anything I had used for the previous 10 years,” she said. “The amazing thing is that when he sprays the property, you have this effervescence of the essential oils in the air.”

She recommended Geo Mosquito to everyone who’d listen to her, and eventually Krstovic took over maintaining the facilities at Rhatigan’s community pool.

“[What he was doing] kind of piqued my husband’s and my interest because we were looking for a small business to invest in locally,” she said. “I’m now home with the kids, but I have a long career in sales, and my husband is in sales as well.”

Within a year, the couple became active investors.

“We love the origin story of this relationship because it’s reflective of how friendly and supportive the local business community is in Peachtree Corners,” she said.

Caring about the work

Krstovic attributes his success to caring about the work, attention to detail and understanding client needs. He doesn’t just spray the yard and leave; he has a system of mapping out problem areas and educating clients about prevention.

“We’re looking at anything that could hold a water source and eliminating that, asking our clients what time of the day they’re getting eaten up, what part of their body and what part of their yard,” he said.

“That helps us figure out the species of mosquito that’s attacking them, so we know where to target, because different species have different nesting sites.”

Growing the business

Geo Mosquito has begun working with Vox-pop-uli to upgrade their logo, website and promotional materials.

“Geoff is a typical entrepreneur — protective of what he’s doing,” Rhatigan said. “So going through the steps of changing the logo, coming up with a new tagline, starting to do some marketing, is both exciting and a little scary.”

But the team at Vox-pop-uli has been a tremendous resource — helping them go at their own pace.

“This first year of investment was about seeing what the market interest is and expanding brand awareness,” said Rhatigan. “Vox-pop-uli offers so many services, it’s daunting for an emerging company to manage so many different contractors: creative, graphic design, printing, mailing. But they have a great, responsive organization that has been very helpful.”

Next steps

With a proprietary formulation for the mosquito abatement, Geo Mosquito wants to bottle the solution and sell it nationally.

Additionally, in 2025, the company plans to expand into ecofriendly pest control services for inside the home. They are also interested in working with local municipalities, churches and schools to expand their mosquito control services.

The Local Thread: This business profile series is proudly supported by Vox-pop-uli, championing local stories and the communities we serve.

This article is also available in the print and digital edition of the Jan/Feb issue of Southwest Gwinnett magazine.

Photos courtesy of Geo Mosquito.