Snake holes can be identified by their smooth, circular openings, lack of excavated dirt, and location near foundations or cover. Unlike rodent holes, snake holes do not have a dirt mound at the entrance.
Snakes use existing burrows created by rodents, turtles, or other animals. This guide covers how to identify active snake holes and distinguish them from other animal burrows.
Key Takeaways
- Snake holes are smooth and circular with no dirt mound at the entrance.
- Look for shed skin, fresh tracks, and activity near the entrance to confirm snake presence.
- Most snake holes are actually rodent burrows that snakes have taken over.
- Never reach into a hole to check for snakes. Use a flashlight or camera.
In This Guide
Appearance of Snake Holes
- Circular or slightly oval opening, 1-3 inches in diameter.
- Smooth, worn edges from repeated use by the snake or its prey.
- No excavated dirt pile around the entrance. If there is a dirt mound, it is likely a rodent hole.
- Located near foundations, rocks, logs, walls, or dense vegetation.
- May have spider webs across the entrance if inactive. Cobwebs mean no recent activity.
Signs of an Active Snake Hole
- Shed snake skin near the entrance or inside the hole.
- Fresh S-shaped tracks in mud, dust, or sand near the opening.
- Warm weather activity Snakes are most active in spring and fall during cooler hours.
- Plug the hole with leaves or tissue. If it is disturbed within 24 hours, the hole is active.
- Musky odor near the entrance. Some snakes produce a musky scent when threatened.
Snake Holes vs Rodent Holes
| Feature | Snake Hole | Rodent Hole |
|---|---|---|
| Opening shape | Smooth, circular | Irregular, may have dirt |
| Dirt mound | None | Present at entrance |
| Size | 1-3 inches | 1-2 inches |
| Shed skin | Common nearby | Rare |
| Track pattern | S-shaped trail | Footprints, tail drag |
| Droppings | Liquid, white-tipped | Solid pellets |
For more, read our snake barrier guide and snake repellent guide.
Frequently Asked Questions
How do I know if a snake hole is active?
Plug the hole loosely with leaves or tissue. Check it after 24 hours. If the plug is pushed aside or moved, the hole is active. Look for shed skin, fresh tracks, and droppings near the entrance.
What time of year are snake holes most active?
Snake holes are most active in spring (March to May) and fall (September to October) when snakes are actively hunting. During the hottest part of summer, snakes may be active only at dawn and dusk. In winter, snakes brumate in deeper dens.
Should I fill in a snake hole?
Only after confirming the snake has left. If the hole is near your home, seal it with 1/4 inch hardware cloth, gravel, or expanding foam. Monitor for signs of re-excavation. If you seal a snake inside, it may die and create odor problems.
How deep are snake holes?
Snake holes vary in depth depending on the original burrow creator. Rodent burrows can be 6-12 inches deep. Tunnels may extend several feet horizontally. During winter brumation, snakes may use deeper dens below the frost line.
The Bottom Line
Snake holes are identified by their smooth, circular openings, lack of dirt mounds, and location near cover. Most snake holes are actually rodent burrows that snakes have taken over.
To confirm activity, look for shed skin, fresh tracks, and use the plug test. Never reach into a hole. If you find a snake hole near your home, seal it after confirming it is empty, and control rodent populations to reduce snake habitat.
