Chinch bugs are behind more St. Augustine lawn damage in Central Florida than almost any other single cause, and the early symptoms are easy to mistake for something as simple as needing more water.
The tell: watering doesn't fix it
Drought-stressed grass greens back up after a good watering. Chinch bug damage doesn't — irregular yellow-to-brown patches that stay dry-looking no matter how much you water are the clearest sign something else is going on.
Where they hide
Chinch bugs cluster in the hottest, sunniest, driest parts of a lawn first — often near sidewalks, driveways or south-facing edges — before spreading into shadier areas.
A simple way to check
Cut both ends off a coffee can, push it a couple of inches into the soil at the edge of a damaged patch, and fill it with water. Chinch bugs will float to the surface within a few minutes if they're present.
Why early matters
Left alone, chinch bug damage spreads fast in warm weather and can kill sections of lawn that then need full sod replacement instead of simple treatment.
If you're seeing patches that don't respond to watering, a quick call for a lawn inspection can catch it before it spreads any further.