Gnat Season Hits South Carolina as the Weather Warms
When the temperature climbs, a tiny army of gnats—often called no‑see‑ums—appears across South Carolina. These minuscule insects are almost invisible, yet they leave itchy bites that feel like a mosquito sting.
Why They Show Up
The arrival of gnats is closely tied to warm, humid conditions. A local horticulture expert notes that heat and moisture signal the presence of these flies.
Two Main Types
| Type | Description | Habitat |
|---|---|---|
| Biting Gnats (biting midge / sand gnat) | Lives near wetlands; feeds on blood. | Swamps, marshes, ponds, stream banks |
| Eye Gnats | Less common; primarily a nuisance. | — |
Midges belong to the same fly family as mosquitoes (Order Diptera) but are smaller—about one‑sixteenth of an inch. Female midges need a blood meal to produce eggs, so they often feed on humans early in the morning and late at night.
Unlike mosquitoes that simply suck blood, biting midges slice a tiny hole in the skin to feed. The bite leaves a raised, itchy bump that can be uncomfortable.
Natural Control
In healthy water bodies, fish and other predators keep gnat larvae in check. However, polluted or unbalanced waters can reduce these predators, allowing more midges to thrive.
Tips for Staying Comfortable
- Screened porch: Keeps gnats out.
- Portable fans: These insects are weak fliers; moving around makes it harder for them to locate a target.
- Long sleeves and breathable fabrics: Provide physical barriers.
- Bug spray: Adds extra protection.
Residents often hope for county‑wide insect control, but the local mosquito program focuses only on mosquitoes. Their spraying schedule depends on weather and current mosquito populations, so it may not start until the heat rises further.
In the meantime, keeping a fan and insect repellent handy is the best way to beat the gnats as they swarm.
