Pest Control in Schertz: What the Clay Under Your Slab Means for Your House
Schertz went from a rail stop to one of the fastest-growing cities on the I-35 corridor, and most of that growth got poured straight onto blackland clay. That ground is the through-line in almost every pest call we take here. It cracks open in a dry August, it holds water for days after a storm, and it moves enough to open gaps around slabs and plumbing penetrations. If you own a home anywhere from Northcliffe down to the Crossvine, here is what that means in practice.
Updated August 13, 20265 min read
Quick answer
Pest control in Schertz has to answer for the ground the city is built on. Blackland clay cracks open in drought and holds water after rain, which feeds fire ants, mosquitoes, and the subterranean termites that work slab edges along the I-35 corridor. Bob Jenkins Pest & Lawn Services treats Schertz homes from San Antonio next door, with recurring exterior service, a free quote first, and a warranty that brings us back at no charge if pests return between scheduled visits.
Dealing with this right now?
Dealing with fire ants, mosquitoes, or something you can't identify at your Schertz home? Our technicians work this corridor daily. Request a free quote online or give us a call.
The clay decides the pest list
Heavy clay drains slowly. After one of our spring gully-washers, low spots in a Schertz yard can hold water long enough to feed the next brood of mosquitoes, and the saturated ground pushes fire ant colonies up into fresh mounds across lawns that looked clean a week earlier.
The same soil works against the house in dry months. When clay shrinks, it pulls away from foundations and opens hairline paths along the slab edge. Ants use them. So do the subterranean termites that live in this soil, which follow moisture lines to the one place that stays damp all summer: the irrigated strip right against your foundation.
What we actually get called about in Schertz
The order shifts with the season, but the core list here barely changes from year to year.
- Fire ants, especially after rain pushes mounds up through lawns and along sidewalk edges
- Mosquitoes wherever clay low spots, French drains, or backed-up gutters hold water
- Subterranean termites working slab edges and expansion joints, in old and new sections alike
- Spiders and the general household pests that follow the insects they eat
- Roaches and rodents in the older neighborhoods off FM 78, near Randolph, where homes have decades-old plumbing chases and mature tree cover
A new build is not a pass
A lot of Schertz housing is under ten years old, and we hear the same assumption in the newer subdivisions: the house is new, so pests aren't a problem yet. The ground says otherwise. Construction churns the soil, strips the predators, and then lands irrigation and sod on top. Fire ants colonize disturbed ground faster than established lawn.
New slabs get no grace period from termites either. The pre-construction soil treatment under a new build has a working lifespan, not a lifetime one, and the clay movement that cracks sidewalks here also opens the slab-edge gaps termites travel. If you've never had the house looked at since the builder handed over the keys, a termite inspection is cheap certainty.
What recurring service looks like here
One-and-done treatments don't hold up on this ground, because the pressure never stops: the ants and termites live in the soil itself, and every storm resets the mosquito clock. Our recurring service works the exterior first, the perimeter, entry points, eaves, and yard problem spots, so most visits don't need you home at all. Interior treatment happens when something's actually made it inside.
The warranty is the part Schertz homeowners use most in storm years: if your bugs or insects return between scheduled visits, we come back and re-treat at no extra charge. Quotes are free, specific to your property, and carry no obligation.
Recommended services
Frequently asked questions
Yes. Schertz is part of our core San Antonio-area coverage, along with Cibolo, Universal City, Converse, and Selma. Request a free quote online or call and we'll get a technician out.
The colonies are there year-round, working below ground. When rain saturates the clay, they rebuild upward to keep the brood dry, which is why mounds seem to appear overnight after a storm. Treating the mounds you can see knocks back symptoms; broadcast baiting plus a perimeter program addresses the colonies you can't.
New construction gets no exemption from subterranean termites, which are established in the soil across the I-35 corridor. Builder soil treatments wear down over time, and clay movement opens slab-edge gaps termites use. An inspection tells you where the house actually stands.
It depends on the property and the problem, so we quote after looking rather than off a flat rate card. Every quote is free and carries no obligation.
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