Let’s break down what it most likely is and what you can do safely.
🐾 Most likely causes
🦡 1. Badger (if in rural/suburban areas)
Honey badger
In South Asia, the honey badger or similar burrowing mammals can dig:
- Deep, wide tunnels
- Under concrete slabs or sheds
- Very persistent burrows that reopen if filled
Signs:
- Large entrance hole
- Fresh soil piles each morning
- Strong digging activity at night
🦊 2. Fox (in some areas)
Red fox
Foxes often:
- Dig under structures to create dens
- Return nightly if they’ve made it home
🐀 3. Large rodents (very common)
Rat
Rats or bandicoots may:
- Dig repeated tunnels under slabs
- Reopen filled holes quickly
- Be active at night
This is often the most common cause.
⚠️ Why filling it doesn’t work
If the animal is still inside or considers it a home:
- It will dig back out overnight
- You may accidentally trap it and cause more damage
- The tunnel system may be larger than it looks
🔍 How to confirm what it is
Check at night or early morning for:
- Footprints around the hole
- Droppings (size helps identify animal)
- Fresh digging direction (always same spot = resident burrow)
🛑 What NOT to do
- Don’t block it completely while active (can trap animal under slab)
- Don’t pour chemicals or fuel into it
- Don’t collapse concrete edges (can damage shed foundation)
✅ Safe ways to handle it
1. Identify first (important)
Use a flashlight at night or a cheap motion camera if possible.
2. Make the area unpleasant
- Strong-smelling deterrents (garlic, ammonia-soaked cloth near—not inside hole)
- Keep area well-lit at night
- Remove food sources (pet food, waste)
3. One-way exit method (most effective)
- Place a temporary one-way flap/mesh funnel over the entrance
- Let the animal leave but not return
- After 3–5 days of no activity, seal permanently
4. Permanent protection
Once cleared:
- Fill with gravel + compact soil (not just loose dirt)
- Add wire mesh under slab edges if rebuilding
- Seal edges with concrete
🚨 When to call pest control
- Tunnel keeps returning for more than 1–2 weeks
- Hole is large or expanding
- You suspect a large animal (badger/fox)
- Structural damage is appearing in slab
👍 Bottom line
A repeated tunnel under your shed is almost always a resident burrowing animal (often rats or similar pests, sometimes larger mammals). Simply filling it won’t work until the animal is safely excluded.
If you want, describe the hole size, soil type, and your location, and I can help you narrow down exactly what animal it is and the best removal method for your situation.