A snake inside the living space is the call homeowners dread most. The good news: indoor snake calls are uncommon compared to yard or garage calls, and almost every one traces back to one of five recurring entry points.
1. Crawlspace vent screening
This is the number-one indoor entry route in older North Alabama homes. A rusted or rodent-damaged crawlspace vent screen lets a snake into the crawl, where it follows utility penetrations up into walls, behind kitchen cabinets, and occasionally into the living area through a baseboard gap. Restoring screening to the crawl vents — with proper hardware cloth, not aluminum — closes most of these calls.
2. The plumbing penetration
Where a copper or PEX line passes through a wall plate into the kitchen sink cabinet, there is almost always a half-inch gap of unsealed annular space. Rats use it. Snakes follow. Sealing these penetrations with steel wool packed tight and then sealant is standard work on the inspection.
3. The dryer vent flap
Dryer vents stuck open by lint, broken flaps, or installations missing a backdraft cap are an underrated entry point. The vent emerges three feet up the wall — well within climbing range for a rat snake. Replacing the cap solves it.
4. The HVAC plenum and return
This one surprises homeowners. A snake in the crawl that reaches the return-air boot can be drawn upward by airflow when the system kicks on. We rarely actually see this end in a snake-in-the-vent scenario, but unsealed boot collars are a real airflow leak and a real wildlife leak.
5. The garage-to-living door
If the garage already has snakes coming in under the door (see our garage-entry article), the next step is the threshold of the kitchen door from the garage. Weather stripping that has compressed flat over fifteen years leaves a finger-width gap at the corners. That is enough.
The inspection approach
We walk the crawlspace, the kitchen and bath plumbing chases, the dryer and HVAC penetrations, and every threshold the snake could plausibly have used. Once identified, the entry is sealed; the snake is removed; the conditions are corrected. Our broader snake entry-point and prevention reference covers the inspection points in more detail.
If you are seeing snakes in a wooded subdivision around Decatur or Huntsville, the crawlspace screen is the first thing we check.
