Here are 7 smells commonly believed to discourage snakes, along with what is known about them and how to use them.
1. Garlic
Garlic contains sulfur-containing compounds that produce a strong odor. Many people believe these compounds can make an area less attractive to snakes, although scientific evidence is limited.
How to use it
- Crush 8–10 garlic cloves.
- Mix them with 1 liter (about 1 quart) of water.
- Let the mixture sit overnight.
- Strain and pour it into a spray bottle.
- Spray around:
- Garden edges
- Fence lines
- Storage sheds
- Garages
- Entry points
Reapply after heavy rain or every few days.
Pros
- Natural
- Easy to make
- Safe for most gardens
Limitations
- The smell fades quickly outdoors.
- It works best as a temporary deterrent rather than a permanent solution.
2. Onion
Like garlic, onions contain sulfur compounds that produce a pungent smell.
How to use it
- Blend one large onion with water.
- Strain the mixture.
- Spray around the yard perimeter.
- Alternatively, place chopped onions in areas where snakes have been seen (replace frequently before they rot).
Best locations
- Wood piles
- Compost areas
- Garden borders
- Around sheds
Pros
- Inexpensive
- Readily available
Limitations
- Needs frequent replacement.
- Can attract insects if left to decay.
3. Cinnamon Oil
Cinnamon essential oil has a strong aroma that some pest-control professionals use as part of integrated snake management, although evidence for consistent effectiveness is mixed.
How to use it
- Mix:
- 10–15 drops cinnamon essential oil
- 2 cups water
- A small amount of mild liquid soap (helps the oil mix)
Spray around:
- Doorways
- Patio edges
- Rock gardens
- Decks
Safety
Keep concentrated essential oils away from pets, especially cats, unless the product is labeled as safe for them.
4. Clove Oil
Clove oil contains eugenol, which has a powerful spicy scent. It is sometimes used by wildlife professionals in combination with cinnamon oil to encourage snakes to leave enclosed spaces.
How to use it
Mix:
- 10 drops clove oil
- 10 drops cinnamon oil
- 2 cups water
Spray around outdoor areas where snakes may hide.
Important note
Do not spray directly onto a snake. If a venomous snake is in or around your home, keep a safe distance and contact local animal control or wildlife authorities.
5. Ammonia
Ammonia has a strong, irritating odor that some people use as a snake deterrent.
How to use it
- Soak old rags in household ammonia.
- Place them inside open containers near outdoor areas where snakes may enter.
- Replace them regularly.
Caution
- Never mix ammonia with bleach or other cleaners.
- Keep ammonia away from children and pets.
- Use only in well-ventilated outdoor locations.
6. Vinegar
White vinegar is often suggested for use around ponds and damp areas because snakes may travel through moist environments.
How to use it
Pour or spray white vinegar around:
- Pond edges
- Water features
- Drainage areas
- Foundation edges
Benefits
- Easy to obtain
- Non-toxic when used appropriately
Drawbacks
- Washes away quickly after rain.
- May affect some plants if used excessively.
7. Lemongrass (Citronella)
Lemongrass and citronella produce a citrus-like scent that many people use to discourage various pests. Evidence for repelling snakes specifically is limited, but planting lemongrass may contribute to making an area less attractive.
How to use it
- Plant lemongrass around:
- Garden borders
- Walkways
- Patios
- Fence lines
- Or spray diluted citronella essential oil outdoors according to the product instructions.
Additional benefit
Lemongrass may also help reduce mosquitoes in some situations.
Do These Smells Really Work?
Research has not shown that these smells reliably repel all snakes. Different snake species respond differently, and odors alone are generally less effective than removing the things snakes are looking for: food, shelter, and access.
For the best results, combine scent-based deterrents with these proven measures:
- Keep grass short.
- Remove piles of rocks, wood, and debris.
- Seal gaps under doors and around foundations.
- Control rodents, which are a major food source for many snakes.
- Trim dense shrubs and ground cover near your home.
- Store firewood off the ground and away from the house.
- Keep pet food indoors to avoid attracting rodents.
Final Thoughts
Natural scents like garlic, onion, cinnamon oil, clove oil, ammonia, vinegar, and lemongrass may help discourage snakes in some situations, but they should not be relied on as a guaranteed solution. The most effective long-term strategy is to make your property less attractive to snakes by eliminating hiding places, reducing prey, and sealing entry points. If you encounter a venomous snake or one that has entered your home, avoid attempting to handle it yourself and contact the appropriate wildlife or animal control service.