Where Are Silverfish Most Common in the US?

Silverfish are small, wingless insects that often invade homes across the United States. These nocturnal creatures get their name from their silvery, fish-like appearance, and their presence can be unsettling, especially when they appear in large numbers. Knowing where silverfish are most common in the US, what attracts them, and how to keep them away will help you manage and prevent infestations effectively.

Where Are Silverfish Most Common in the US?

Silverfish live in moist, dark, and cool environments. In the United States, they are most common in states with high humidity levels. Southern states like Florida, Louisiana, and Texas, with their warm and humid climates, see more frequent silverfish infestations. Here’s where you’re most likely to encounter silverfish in the US:

1. Southern states: Silverfish are particularly common in the southern states like Florida, Louisiana, Texas, and Georgia. The warm, humid climate in these regions provides ideal conditions for silverfish to thrive. Homes in these states often have higher moisture levels, especially in basements, bathrooms, and kitchens, making them prime habitats for silverfish.
2. Coastal areas: Coastal regions, especially along the East Coast and the Gulf of Mexico, also have higher humidity levels, which attract silverfish. Cities like Miami, New Orleans, and Houston frequently report silverfish infestations due to the moist air and warm temperatures.
3. Northern states: While less common than in the South, silverfish can still be found in northern states, particularly in areas with damp, cool environments. Homes with basements, attics, or poorly ventilated bathrooms are susceptible to silverfish, even in places like New York, Pennsylvania, and Ohio.
4. Pacific Northwest: The Pacific Northwest and states like Washington and Oregon also provide a suitable environment for silverfish due to its cool, moist climate. The frequent rain and high humidity in this region create ideal conditions for silverfish to thrive indoors.
5. Midwestern states: In the Midwest, silverfish are more common in homes with basements or older structures that may have issues with moisture. States like Illinois, Michigan, and Wisconsin can see silverfish infestations, particularly in homes that struggle with humidity control.

What Do Silverfish Eat?

Silverfish prefer to eat carbohydrates and protein-rich materials. Their diet includes starches, sugars, paper, glue, book bindings, and even fabrics. They often feed on wallpaper paste, clothing, and cereals, causing damage to household items. By understanding what silverfish eat, you can take steps to protect your belongings.

What Attracts Silverfish?

Several factors attract silverfish to your home. The primary attraction is moisture, which explains why you often find them in bathrooms, kitchens, and basements. Dark, undisturbed areas like closets and attics also draw them in. Silverfish love starchy materials, making paper products, books, and cardboard boxes particularly appealing.

Myths and Facts About Silverfish

Myth	Fact
Silverfish bite humans.	Silverfish do not bite; their jaws are too weak to harm humans.
Silverfish only live in dirty homes.	Silverfish can live in any home, clean or dirty, as long as it’s humid.
Silverfish are dangerous to humans.	Silverfish are not dangerous; they are mostly a nuisance.
Silverfish infestations are seasonal.	Silverfish can infest homes year-round, especially in humid areas.
Silverfish are attracted to bright lights.	Silverfish prefer dark, undisturbed areas and avoid light.