Scorpion Control & Exclusion

The striped bark scorpion, Centruroides vittatus. Texas A&M AgriLife calls it the most common and widespread scorpion in Texas: roughly two and a half inches, light brown, two broad dark stripes down the back, a dark triangle above the eyes. Populations out toward Big Bend are less strongly marked.

Three facts about its behaviour explain almost everything about how it gets treated. It is nocturnal, so what you find in daylight is where it stopped rather than where it was headed. It shelters under things — AgriLife lists rocks, boards, debris, dead vegetation and fallen logs, and specifically associates it with human dwellings. And it climbs, which is why they are frequently discovered in attics and why "it can't get up there" is usually wrong.

The sting is painful and produces local swelling and itching that can persist for several days, with numbness and swelling lasting anywhere from minutes to days. No Texas scorpion is lethal. That is worth saying clearly, because the fear is doing more work than the risk — and fear is exactly what this trade tends to sell on.

Worn door sweeps, gaps under garage doors and failing window seals account for most of the rest. None of this is exotic — it is just the part that gets skipped when the job is priced as a spray.

This is AgriLife's own prevention list, and we are not going to pretend it is a trade secret. Some of it you can do this weekend, and it will do more than a single treatment would:

• Seal pipe and wire penetrations where they enter the house
• Keep window and door weather stripping in good order
• Trim vegetation that overhangs or touches the house
• Do not stack firewood against a wall or near a door
• Clean the gutters
• Block weep holes with copper mesh
• Move debris, boards and stored material away from the foundation
• Shake out shoes, gloves and stored clothing — they end up in things

If you do all of that and still have a problem, then it is worth paying somebody. That is the honest order, and telling you so costs us a job occasionally.

This is the connection most pest companies never make, because most pest companies only do pest control. AgriLife's list of what striped bark scorpions shelter under is: rocks, boards, debris, dead vegetation and fallen logs. Read that again as a description of a West Texas side yard.

The stack of lumber left over from a project. The pile of brush from last year's trimming. The old swamp cooler behind the shed. The firewood against the wall. Every one of those is harbourage sitting within a few feet of the foundation, and no amount of perimeter spray outcompetes a permanent shelter with food and shade in it.

We do brush and lot clearing and junk removal alongside the pest side, which means the debris pile gets hauled and the ground it was sitting on gets treated on the same visit. That is not a bundling exercise — it is the actual fix, and splitting it across two companies is how it ends up half done. Whoever hauls it away usually does not treat, and whoever treats usually works around it.

There is a second reason this matters in some towns. Several cities on the route enforce weed and nuisance standards with real deadlines and real fees — Lubbock at eight inches averaged across the lot with a $175 administrative fee per occurrence, Odessa at twelve inches with equipment and labour billed by the hour, Midland at eighteen, Andrews at twelve on smaller lots. Outside city limits, Texas Health & Safety Code §343.011 covers weeds over thirty-six inches within three hundred feet of a residence. If you have had a notice, the clearing work and the scorpion problem are frequently the same job.

"A black light will solve it." Scorpions fluoresce under UV, and a black light is genuinely useful for finding out how many you have and where they are moving at night. It is a diagnostic tool, not a treatment. Walking the perimeter with one after dark is worth doing — just do not expect it to change anything on its own.

"Cats and chickens keep them down." Both will kill scorpions. Neither addresses the entry points, and a cat that hunts scorpions is a cat that occasionally gets stung. It is not a plan.

"You need the strongest product available." Product strength is not usually the limiting factor on scorpion work — placement is. A properly chosen residual at the right entry points and a dust into the voids will outperform something harsher applied to the wrong surfaces, and the label sets the rate either way. If somebody is selling you on the chemical rather than the inspection, that is worth noticing.

What actually moves the needle is unglamorous: find the openings, close them, take away the shelter, treat properly, and come back and check it after the first summer.

Scorpions are the pest that worries parents most out here, and the fear is understandable even though the risk is smaller than it feels. The honest position: no Texas scorpion is lethal to humans, the venom is less potent than the Arizona species most of the alarming stories come from, and the usual outcome of a sting is a painful few hours and some swelling that can linger for days. A sting to a small child, an elderly person, or anyone with an allergy history is still worth a call to a doctor.

On the treatment side, the products are applied to their EPA-approved labels, with children, pets and the areas your family actually uses taken into account when deciding where anything goes. Dusts go into voids and weep holes — places nobody is touching — rather than onto surfaces. Precautions get explained before we start rather than left for you to work out.

The most reassuring thing we can tell a parent, though, is not about chemistry. It is that the sealing work is what keeps them out, and sealing does not wear off. A treated perimeter protects a house for a season. A sealed weep hole protects it for as long as the mesh stays in.

For the biology behind all of this — identification, the live-birth cycle, why AgriLife says no Texas scorpion is deadly, and how to run a UV survey — see the striped bark scorpion library page.