Snake-A-Way can be toxic to dogs if they eat enough of it, and I would not use it in a yard where a dog lives. The granules contain sulfur and naphthalene, and both can cause problems if swallowed. Here is what the stuff actually does, what to watch for, and what I would use instead.
The Short Version
- Snake-A-Way contains sulfur and naphthalene, both of which can be toxic to dogs if eaten.
- Mild symptoms include vomiting, diarrhea, and drooling.
- Severe symptoms, from a large amount, can include lethargy, tremors, and even seizures.
- Barriers and habitat changes are safer and work better than any chemical repellent.
What Is In Snake-A-Way?
The label lists sulfur and naphthalene as the active ingredients, with naphthalene being the harsher of the two. Here is what each does in a dog:
- Sulfur irritates the gut. Eating it can cause vomiting, diarrhea, and belly pain.
- Naphthalene is the bigger concern. It can destroy red blood cells, which leads to weakness, pale gums, and in serious cases, seizures.
The risk depends on how much the dog ate. A dog that sniffs or licks a few granules will probably show mild or no symptoms. A dog that eats a significant amount is in real trouble and needs a vet fast.
Symptoms to Watch For
- Mild: drooling, vomiting, diarrhea, loss of appetite
- Moderate: lethargy, weakness, pale gums
- Severe: tremors, seizures, trouble breathing, collapse
If your dog shows any of these after being around Snake-A-Way, call your vet or an animal poison control center right away.
A Note on What “Snake Away” Means
One thing worth flagging: “snake away” gets used two different ways. Some people mean this granular repellent product, and some mean snake-avoidance training, where a dog is taught to stay away from live snakes. Those are completely different things. Training works and is safe. The chemical granules are what I am warning you about here.
Safer Alternatives
| Method | Safety for dogs | Effectiveness |
|---|---|---|
| Snake-proof fencing | Safe | Excellent |
| Remove hiding spots | Safe | High |
| Seal entry points | Safe | High |
| Control rodents | Safe | Moderate |
| Snake-A-Way (for comparison) | Toxic to dogs | Ineffective |
Frequently Asked Questions
Call your vet or an animal poison control center immediately. Do not make the dog vomit unless a professional tells you to. Bring the packaging with you so the vet can see the ingredients and concentration.
Not really. Granules wash into areas where dogs walk, and dogs may be drawn to the smell. If you have dogs, skip the chemicals and use fencing and habitat changes instead.
It has limited and inconsistent results. It may briefly deter a snake, but the effect fades and snakes get used to the smell. Physical barriers are far more reliable.
The safest option is no chemical repellent at all. Use snake-proof fencing, hardware cloth over vents, and habitat changes like removing hiding spots and controlling rodents. Those are safe for dogs and they actually work.
Bottom Line
Snake-A-Way can be toxic to dogs, especially if they eat a meaningful amount, and it is not reliably effective against snakes anyway. Skip it. Snake-proof fencing, sealing entry points, and cleaning up the yard give you real protection without putting your dog at risk.
