If you recently moved to Southwest Florida, or even if you have lived here for decades, the variety and persistence of bugs in Florida homes can catch you off guard. The warm, humid climate that makes Lee County a great place to live also makes it one of the most pest-active regions in the country.
After 20 years of treating homes in Fort Myers, Cape Coral, and Bonita Springs, I have seen every pest this region throws at homeowners. This guide covers the 10 most common bugs found inside Southwest Florida homes, how to tell them apart, and when to call a professional.
What this guide covers:
- The 10 most common household pests in Southwest Florida
- How to identify each bug quickly and correctly
- Which ones are dangerous and which are just a nuisance
- When DIY works and when you need a licensed technician
1. Palmetto Bugs (American Cockroaches)
The palmetto bug is the pest every new Florida resident meets first. These are American cockroaches, typically 1.5 to 2 inches long, reddish-brown, and capable of flying short distances. They live outdoors in mulch, palm trees, and sewer systems but invade homes when heavy rains flood their hiding spots or when drought drives them to seek water.
In Fort Myers, palmetto bugs are heaviest during the summer rainy season from June through September. You will often find them in garages, bathrooms, and kitchens near plumbing. Unlike German cockroaches, palmetto bugs do not typically infest in large numbers indoors. Seeing one or two after a storm is normal. Seeing them regularly means there is an entry point or moisture issue that needs attention.
A quarterly exterior perimeter treatment keeps palmetto bugs from getting inside in the first place.
2. German Cockroaches
This is the roach that should concern you. German cockroaches are small (about half an inch), light brown with two dark stripes behind their head, and they reproduce at an alarming rate. A single female can produce 400 offspring in her lifetime. They live exclusively indoors, typically in kitchens and bathrooms where moisture and food scraps are available.
Store-bought sprays actually make German roach problems worse because they scatter the colony into new hiding spots without killing the egg cases. Professional gel bait and growth regulator treatments target the colony at its source. If you see even one German roach, act fast because there are many more you are not seeing.
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3. Ghost Ants
Ghost ants are tiny (1.5mm), almost translucent, and they trail along countertops, sinks, and windowsills in long, wandering lines. Their pale legs and abdomen make them hard to spot unless you look closely. They are attracted to sweets and moisture, and they nest both inside wall voids and outside in leaf litter.
Ghost ants are one of the most common indoor ant species in Lee and Collier counties. They are not dangerous, but they are persistent. Killing the visible trail does nothing because the colony has multiple queens. Professional bait treatments are the only reliable way to eliminate them completely.
4. Fire Ants
Red imported fire ants build large mounds in yards, along sidewalks, and near AC units throughout Southwest Florida. Their stings cause painful, itchy welts that can trigger serious allergic reactions in some people, especially children and pets. Fire ants are aggressive when their mound is disturbed, and they attack in large numbers.
Pouring boiling water on mounds or using store-bought granules usually just moves the colony a few feet. Professional mound-specific and broadcast treatments eliminate the queen and prevent re-establishment for months.
5. Silverfish
These carrot-shaped, silver-scaled insects are about three-quarters of an inch long and move in a distinctive fish-like wiggle. Silverfish love dark, humid spaces: closets, attics, garages, and under sinks. They feed on paper, glue, starches, and even clothing.
Silverfish are not a health threat, but they damage books, wallpaper, and stored clothing. In Fort Myers homes, reducing indoor humidity with dehumidifiers and fixing plumbing leaks helps. Persistent silverfish issues usually mean the home has a moisture problem that needs professional assessment alongside pest treatment.
6. Drain Flies
Drain flies are small, fuzzy, moth-like insects that hover near sinks, showers, and floor drains. They breed in the organic film inside drain pipes. You will often see them sitting on bathroom walls near the sink or shower.
Cleaning the drain with an enzymatic cleaner and a brush usually resolves a drain fly issue within a week. If they keep returning, the breeding source may be deeper in the plumbing, under a cracked shower pan, or inside a floor drain you do not use regularly. We see this often in older Fort Myers homes near the River District.
7. No-See-Ums (Biting Midges)
No-see-ums are tiny biting flies that are most active at dawn and dusk near mangroves, beaches, and standing water. If you live near Estero Bay, Sanibel, or any waterfront area in Lee County, you know these well. Their bites cause intensely itchy red welts that last for days.
No-see-ums are difficult to control because they breed in mud and wet soil. Professional barrier spray treatments that target mosquitoes also reduce no-see-um populations in your yard.
8. Whiteflies
While whiteflies are primarily an outdoor and garden pest, Southwest Florida homeowners deal with them constantly. They cluster on the undersides of leaves, especially on ficus hedges, and create a sticky honeydew residue that attracts sooty mold. Heavy infestations can kill hedges and ornamental plants.
If your ficus hedge is turning black or dropping leaves, whiteflies are likely the cause. Treatment combines systemic insecticides applied to the soil and contact sprays for immediate knockdown. This falls under our lawn and landscape pest treatments.
9. Spiders (Wolf Spiders and Brown Recluses)
Wolf spiders are large, hairy, and fast, but they are not dangerous. They hunt other insects and are actually a sign that other pests are present. Brown recluse spiders, while less common in Southwest Florida than in northern states, do exist here and their bite can cause tissue damage.
If you are seeing spiders frequently inside your Fort Myers home, the real issue is the pest population feeding them. Treat the food source with regular pest control, and the spider population drops naturally.
10. Mosquitoes
Southwest Florida has one of the longest mosquito seasons in the country, running from March through November. The Aedes aegypti and Aedes albopictus species that carry Zika, dengue, and West Nile virus are both present in Lee County. Standing water in plant saucers, gutters, bird baths, and even bottle caps is enough for them to breed.
Monthly barrier spray treatments combined with larvicide in standing water sources reduce mosquito populations by up to 90% in a typical Fort Myers yard. Read our full mosquito control guide for more details.
When to Call a Professional
DIY pest control works for the occasional invader: a palmetto bug after a storm, a trail of ants on the counter. But if you are seeing the same pest repeatedly, if you spot German cockroaches of any quantity, or if fire ants keep rebuilding in your yard despite treatment, it is time for professional help.
At SW Florida Pest Authority, we offer free pest inspections for Fort Myers, Cape Coral, Bonita Springs, and all of Lee County. We identify the pest, explain the treatment, and give you a clear price before we start. No surprises, no pressure.