Road Salt, Ice Melt and Your Dog's Paws

Most de-icers are based on salts, such as sodium chloride (rock salt), calcium chloride, and magnesium chloride. Some are mixtures, and some contain additives such as colorants or corrosion inhibitors. Products labeled pet-safe generally use ingredients such as urea or other lower-irritation compounds, but they are not risk-free, and large amounts can still upset a dog's stomach.

The mix matters. Calcium chloride can generate heat as it dissolves, and may irritate or even burn wet paws. Rock salt dries the skin. The exact effect depends on the product, the concentration, the time of exposure, and how sensitive your dog's paws are.

Salt and de-icer can irritate and dry out the skin on the paw pads and between the toes. Dogs may lick their paws, limp, hold a paw up, or become reluctant to walk. Ice and salt crystals can also lodge between the toes and cause small cuts and soreness.

Repeated exposure leads to dry, cracked pads, which can become painful or infected if left untreated. Dogs with thin pads or sensitive skin, and those who spend a lot of time walking on treated roads, are most likely to be affected.

Dogs often lick their paws after a walk, or lick puddles and melting snow. A small amount may cause only mild stomach upset, such as drooling, vomiting, or diarrhea. Larger amounts of salt can lead to excessive thirst and urination, and in more serious cases to salt poisoning, which can cause weakness, tremors, and seizures.

Dogs may also eat ice melt directly from a bag or container left within reach, which is more dangerous. Keep products in a secure place, and clear spills promptly.

Note: If your dog has eaten ice melt, call your veterinarian or a poison helpline for advice. In the US, the ASPCA Animal Poison Control Center is 888-426-4435 and the Pet Poison Helpline is 855-764-7661; a fee may apply. Seek urgent care for repeated vomiting, tremors, weakness, or collapse.

The most effective step is to clean paws after each walk. It only takes a minute.

1. Keep a towel and a bowl of warm water by the door.
2. Rinse or wipe each paw, including between the toes and the pads.
3. Wipe the belly and legs, where salty slush collects.
4. Dry thoroughly, since damp skin cracks more easily.
5. Check for redness, cuts, cracks, and ice balls in the fur.
6. Apply a thin layer of paw balm if the pads are dry.

Before you go out, trim the hair between the toes so snow and ice are less likely to ball up, and keep the nails short so the paw sits properly. Apply a paw balm or wax before the walk to make a protective barrier. Boots protect against both salt and ice, but only if your dog accepts them.

On the walk, steer your dog away from heavily salted areas where possible, and keep them from drinking from puddles or eating snow next to roads. If your own steps are salted, use a pet-safe product and apply sparingly. Sweeping up leftover salt can reduce exposure.

Contact your veterinarian if your dog is limping, licking one paw constantly, has red, swollen, or bleeding pads, or has deep cracks. If skin looks burned or blistered, rinse with lukewarm water and seek advice. For more general signs of illness after exposure, such as vomiting, tremors, or lethargy, call your vet.

Your vet can recommend treatments, check for infection, and advise on products. Ask about prescription options if your dog has recurring problems.