St. George is one of the most livable cities in Utah — great weather, stunning scenery, and a growing community of families and longtime residents who genuinely love it here. But the same landscape and climate that make Southern Utah so appealing also bring a cast of uninvited houseguests that just about every homeowner encounters eventually.
Knowing what you are dealing with makes a real difference. Some pests are more of a nuisance than a threat. Others carry genuine risks and need to be addressed quickly. This guide covers the seven most common pests that homeowners in the St. George area run into, what to watch for, and what the right response looks like for each one.
1. Ants
Ants are probably the most frequently reported pest problem in Southern Utah households. They are persistent, they show up in large numbers, and once a trail is established, they tend to keep coming back unless the source is addressed.
The most common species homeowners encounter are pavement ants, odorous house ants, and carpenter ants. The first two are primarily a nuisance — they are after food and water. Carpenter ants are more concerning because they excavate wood to build their nests and can cause structural damage over time if left unchecked.
The best approach starts with removing food sources — cleaning counters, storing food in sealed containers, and taking trash out regularly. If a colony is established inside the home or in the structure, professional treatment is the most reliable way to address it at the source.
2. Cockroaches
Cockroaches are among the most resilient insects on the planet, which unfortunately makes them one of the harder household pests to deal with on your own. In Southern Utah, the American cockroach and the German cockroach are the two species most commonly found in homes.
German roaches in particular are a serious concern — they reproduce quickly, tend to live close to food preparation areas, and are notoriously difficult to eliminate without targeted, professional-grade treatment. If you see one during the day, there are almost certainly more hiding nearby.
Keeping the kitchen clean, fixing any leaks under sinks, and sealing gaps around plumbing are all helpful preventive steps. For an active infestation, especially of German roaches, professional treatment is strongly recommended.
3. Scorpions
For many people moving to Southern Utah, scorpions are the pest they are most surprised to encounter up close. The bark scorpion — the species most common in this area — is the most venomous scorpion in North America, so this is not one to take lightly.
Scorpions are nocturnal and most active during warm months, though in Southern Utah’s mild climate they remain present year-round. They enter homes through gaps under doors, cracks in the foundation, and around utility penetrations. They are also skilled climbers, which means they can show up in unexpected places — inside a shoe, in a folded towel, or along a wall near the ceiling.
Sealing entry points, keeping the perimeter of your home clear of debris and ground cover, and scheduling regular professional scorpion barrier treatments are the most effective combination for keeping them out.
4. Spiders
Most spiders that end up inside Southern Utah homes are harmless and actually help by feeding on other insects. That said, the black widow is found throughout this region and is a genuine health concern. Black widows prefer undisturbed, low-traffic areas — garages, storage rooms, woodpiles, and beneath outdoor furniture are common spots.
Keeping storage areas organized, wearing gloves when reaching into undisturbed spots outdoors, and shaking out items like shoes and gardening gloves before use are sensible habits. Regular pest control reduces spider populations by targeting the insects they feed on, which removes one of the main reasons spiders set up inside or around a home.
5. Rodents
Mice and rats are a concern for homeowners throughout the St. George area, particularly as cooler temperatures arrive in fall and early winter. Rodents are looking for warmth, shelter, and food — and a home provides all three if entry points are available.
A mouse can enter through a hole roughly the size of a dime. Rats need a little more space, but not much. Common entry points include gaps around the foundation, openings where pipes enter the home, and unscreened vents. Inside, rodents tend to establish themselves in attics, wall voids, and behind large appliances where they are unlikely to be disturbed.
Beyond the obvious sanitation concerns, rodents can damage insulation and gnaw on electrical wiring, which creates a fire hazard. Signs of activity include droppings, gnaw marks, and scratching sounds in walls or ceilings at night. A professional rodent control program addresses entry points, trapping, and sanitation together for lasting results.
6. Earwigs
Earwigs are one of those pests that alarm people simply by appearance — the pincers on their abdomen look threatening, though they are not dangerous to humans. They are primarily outdoor insects that move indoors when conditions outside become too hot or too dry.
They are commonly found in bathrooms, laundry rooms, and anywhere with consistent moisture. Fixing leaks, improving drainage around the foundation, and reducing the mulch and leaf litter near the house all help. Professional exterior treatment can also create an effective barrier during peak earwig season.
7. Wasps and Hornets
Wasps, yellowjackets, and paper wasps are warm-weather problems that tend to escalate quickly if a nest is allowed to grow undisturbed. Nests commonly appear under roof eaves, inside wall voids, beneath decking, and in any sheltered exterior structure.
Unlike bees, wasps can sting repeatedly and become aggressive when they feel the nest is threatened. Attempting to treat an established nest without the right protective gear and products is genuinely risky. Professional removal is the safest and most effective approach once a nest is active, particularly for nests inside wall cavities or in difficult-to-reach locations.
When You Need a Professional
Many of the pests on this list can be managed more easily with professional help than without it. Consistent, preventive pest control service is the most cost-effective approach for most Southern Utah homeowners — it stops problems before they take hold rather than treating them after the fact.
Shakespeare Pest Control serves homeowners across St. George and the surrounding communities, including Washington, Santa Clara, Ivins, and beyond. We are a family-owned local company that has been protecting Southern Utah homes since 2012. Our team is friendly, experienced, and committed to getting results — backed by a 100% satisfaction guarantee and no contracts required.
If you are dealing with any of the pests on this list, or if you just want the peace of mind that comes with regular professional service, give us a call at (435) 414-0284 or reach out through our website. We are here to help.
