If you've seen a large reddish-brown "palmetto bug" running through your home, it was likely an American cockroach — one of Florida's most common cockroaches. Only German cockroaches are seen more often. American cockroaches are highly adaptable and can survive almost anywhere.
They usually live outdoors but will come inside if they find the right conditions. Since they often travel through unsanitary areas, they can spread bacteria in your home. Fortunately, there are several ways to keep them out.
Where Do American Cockroaches Live?
American cockroaches mostly stay outside, thriving in warm, humid places with moisture and shelter. Around Florida homes, they're found in mulch beds, wood piles, leaf litter, storm drains, crawl spaces, and near garbage cans — anywhere with food, water, and protection from heat.
They're also common in restaurants, stores, bakeries, and warehouses — places with food and damp conditions. Heavy rain, flooding, drought, or extreme heat can drive them indoors to find shelter.
What Do American Cockroaches Look Like?
American cockroaches are the largest common cockroach in Florida, reaching up to two inches long. They have reddish-brown bodies with a pale-yellow mark behind the head. Both males and females have wings and can glide short distances, though they don't fly well.
Young cockroaches (nymphs) look like adults but are smaller and lack fully developed wings. After molting, they appear white, then turn reddish-brown.
Their Life Cycle
American cockroaches mature slowly. A female lays about one egg case a month, each with about 16 eggs, producing around 150 young in her lifetime. It takes over a year for an American cockroach to grow from egg to adult. Adults can live another year, so infestations can persist if not handled.
What Do They Eat?
American cockroaches eat almost anything — dead insects, decaying plants, fungi, crumbs, pet food, bread, paper, cardboard, leather, cloth, and even hair. With food and moisture available, they can establish themselves in many different environments.
How Do They Get Into Your Home?
Most American cockroaches don't start inside your house — they find a way in. They enter through gaps under doors, cracks, spaces around plumbing, broken window seals, or open vents. They can also travel through sewers and drain systems, especially if floor drains are unused and dry.
Firewood, cardboard boxes, and outdoor items brought inside can also carry them in. Once indoors, they seek dark, humid places like garages, laundry rooms, bathrooms, and crawl spaces.
Are American Cockroaches Dangerous?
American cockroaches rarely bite, but they can spread bacteria like Salmonella and E. coli, contaminating surfaces and food. Their droppings and shed skins can worsen allergies and asthma, especially in sensitive individuals.
Signs of cockroach contamination include small dark droppings (like ground pepper), oval egg cases, or a strong, musty odor. Noticing these early helps prevent bigger problems. Even occasional sightings mean you should find and fix entry points before things worsen.
How to Help Keep American Cockroaches Out
To keep cockroaches out, seal cracks and gaps around doors, windows, and utility lines using caulk or weatherstripping. Keep plants, mulch, and wood piles away from your home's foundation, repair leaks, eliminate standing water, and make sure floor drains don't dry out. Clear away yard debris to remove hiding spots.
Indoors, clean up food spills promptly, store food in sealed containers, remove pet food at night, empty garbage often, and vacuum or sweep regularly — especially under appliances.
When Should You Call a Professional?
Seeing a cockroach after heavy rain is normal, but call a professional if you notice:
- Frequent sightings — several times a week
- Spotting them during the day
- Finding them in multiple areas of the home
- Finding egg cases or shed skins
- A persistent strong, musty odor
- Droppings that look like ground pepper
If you notice these signs or the problem is worsening, a professional can help. They inspect your home for entry points and cockroach activity, use targeted treatments, recommend prevention steps, and may schedule a follow-up visit.
Turbo Pest Solutions technicians know how to find entry points, eliminate infestations, and help keep your home cockroach-free year-round. If American cockroaches are causing trouble in your home, call Turbo Pest Solutions at (352) 345-7572.
Written by a licensed pest control professional with hands-on experience serving residential and commercial properties in Citrus County, Florida, supported by consistent positive customer reviews on Google.