Vinegar is a common household ingredient used for cooking and cleaning, but because it has a strong, pungent smell, many dog parents wonder, “Is vinegar bad for dogs?” While vinegar is not toxic, it can still be harmful depending on how much is used and how it’s applied. Its high acidity means that even small amounts may cause gastrointestinal upset, irritate the skin or paws, or worsen existing skin and ear infections.
Some pet owners use diluted vinegar, especially apple cider vinegar (ACV), as a deterrent or occasional topical rinse. However, this does not mean vinegar is safe to give to dogs as food, supplements, or home remedies. Ingesting vinegar or applying it directly to sensitive areas can lead to discomfort, inflammation, or pain rather than health benefits.
In this article, we’ll explain why vinegar is generally not recommended for dogs, outline the potential risks associated with its use, and discuss safer, dog-friendly alternatives that can help keep canine companions healthy, comfortable, and happy.
What Vinegar Is and Why Pet Owners Use It
Vinegar is a common household liquid made through fermentation. It is widely used for cooking, cleaning, and deodorizing. Because it is natural, inexpensive, and easy to find, many pet owners are curious about whether it can also be used safely around their animals.
The two most common types are white distilled vinegar and apple cider vinegar (ACV). White distilled vinegar is primarily used for household cleaning and deodorizing, while apple cider vinegar is often promoted online as a natural health remedy for people and pets alike.
Vinegar’s popularity comes from its high acidity, which gives it mild antimicrobial properties. This is why it can help break down grease, neutralize odors, and reduce some bacteria on surfaces. These same properties have led some people to believe vinegar can offer health benefits, such as killing germs, balancing pH levels, or supporting digestion.
In recent years, vinegar—especially ACV—has become popular in home-remedy circles for pets. Common claims suggest it may help with fleas, yeast infections, ear issues, skin problems, digestive health, or even “balancing” a dog’s internal pH.
While vinegar can be effective for cleaning and deodorizing, most of the health-related claims for pets are anecdotal. There is currently no solid veterinary evidence showing that vinegar provides proven medical benefits for dogs or cats. Because of its acidity, improper use may cause irritation or discomfort rather than improvement, which is why veterinarians generally recommend safer, evidence-based alternatives for pet care.
Is Vinegar Bad for Dogs?
Can dogs have vinegar? Vinegar is not toxic to dogs, but that does not mean it is beneficial or safe to use as a remedy. In general, it is not recommended to use vinegar on or for dogs, as it can cause harm if it is used incorrectly or too often. Most veterinarians advise against using vinegar for dog care because the potential risks outweigh any unproven benefits.
According to experts at Chewy, there is no scientific research showing that vinegar provides real health benefits for dogs. Its high acidity can irritate the digestive tract if ingested, leading to gastrointestinal upset such as nausea or vomiting. When applied topically, vinegar may cause skin, paw, or ear irritation, especially in dogs with sensitive skin or existing conditions.
While a very small amount of highly diluted vinegar is unlikely to seriously harm a healthy dog, it also offers no proven advantage. Safer, vet-approved products are more effective and far less likely to cause discomfort or injury.
Can Dogs Eat Vinegar?
Is vinegar bad for dogs? Dogs should not intentionally consume vinegar, and even small exposures can carry some risk. Accidental contact—such as a quick lick from a spill or trace amounts on food—is unlikely to be dangerous, but it may still irritate the mouth, throat, or stomach.
Vinegar is highly acidic, and dogs’ digestive systems are not designed to handle acidic substances. According to PetMD, vinegar ingestion may lead to gastrointestinal upset, with common symptoms including:
Vomiting
Diarrhea
Excessive drooling
Nausea or decreased appetite
Consuming undiluted vinegar or larger amounts increases the risk of irritation to the esophagus and stomach. Repeated exposure may also contribute to tooth enamel erosion, similar to the effects of acidic drinks on human teeth.
Importantly, there is no scientifically established safe dose of vinegar for dogs. The risks are higher for puppies, senior dogs, and dogs with sensitive stomachs, kidney disease, or other underlying health conditions. Despite popular claims, adding apple cider vinegar to a dog’s water to “improve digestion” or “balance pH” is a myth—there is no scientific evidence to support these practices.
Potential Risks of Vinegar for Dogs
Potential Risk | Explanation / Details |
Gastrointestinal upset | The acetic acid in vinegar can irritate a dog’s digestive tract, leading to vomiting, diarrhea, nausea, excessive drooling, and reduced appetite. In more severe cases, consuming undiluted vinegar or large amounts may irritate the stomach lining and potentially contribute to ulcer formation. |
Skin irritation and chemical burns | Vinegar’s acidity can worsen skin conditions such as dermatitis, hot spots, and existing wounds. When applied to broken, inflamed, or sensitive skin, it may cause stinging, burning, pain, and delayed healing rather than relief. |
Higher risk for dogs with medical conditions | Dogs with kidney disease, urinary tract issues, metabolic disorders, or acid–base balance problems are more vulnerable because added acidity can worsen discomfort and internal imbalance. Senior dogs are also more sensitive due to reduced organ function and lower tolerance to irritation. |
Worsening infections | Using vinegar—especially apple cider vinegar for dogs—to treat infections can increase inflammation and irritation instead of resolving the issue. Applying vinegar to the ears may damage delicate ear tissues, potentially harm the eardrum, and worsen conditions such as otitis (ear infections). |
Overall, while vinegar may seem harmless, its acidic nature makes it risky for dogs, especially when used directly on their body or given internally. Safer, veterinarian-approved treatments are always a better choice for managing skin issues, infections, or digestive concerns.
Do Dogs Like the Smell of Vinegar?
According to Wag, a dog’s sense of smell is their most developed sense. Dogs have around 300 million olfactory receptors, compared to about 6 million in humans. Because of this heightened sensitivity, strong odors can be overwhelming for them. Vinegar has a sharp, acrid smell that most dogs strongly dislike, making it unpleasant rather than neutral or appealing.
Because many dogs avoid the scent, vinegar is sometimes used as a temporary deterrent to discourage chewing, digging, or entering certain areas. If used for this purpose, it should always be highly diluted and applied with care. Safer methods include placing small open containers with diluted vinegar nearby or soaking a cotton ball or piece of fabric and placing it in the area you want to protect.
Vinegar should never be sprayed directly on dogs, plants, or surfaces your dog regularly touches, such as bedding or toys. Direct application can cause irritation, and strong smells may increase stress rather than simply discourage behavior. When possible, pet-safe commercial deterrents or positive training methods are a gentler and more reliable alternative.
When Vinegar May Be Used Safely (With Caution)
Although vinegar is not recommended for direct use on dogs, there are a few limited situations where it may be used around dogs, as long as it is handled carefully and properly diluted.
As a Deterrent for Chewing or Digging
Because most dogs dislike the strong smell of vinegar, it can be used as a temporary scent-based deterrent to discourage chewing or digging in specific areas.
To reduce the risk of irritation, always use a highly diluted solution:
Mix 1 part vinegar with 5 parts water
Apply it only to objects or areas the dog should avoid, such as furniture legs, shoes, baseboards, or outdoor garden edges
Important safety notes:
Never spray vinegar directly on a dog’s face, nose, skin, or fur
Do not apply it to bedding, toys, food bowls, or areas the dog regularly lies on
Avoid spraying directly on plants, as vinegar can damage foliage and soil
Use vinegar only in well-ventilated or outdoor areas to prevent strong fumes from irritating the dog’s (or your own) respiratory system
Even when used as a deterrent, vinegar should be considered a short-term solution, not a training tool. Pet-safe commercial deterrent sprays and positive reinforcement training are generally more effective and safer for long-term behavior management.
For Dog Paw Soaks (Diluted Only)
In limited situations, highly diluted apple cider vinegar (ACV) may be used to help clean or freshen a dog’s paws, especially after walks on dirty or muddy surfaces. This should be done with caution and only on healthy, intact skin.
How to use it safely:
Mix 1 part ACV with 1 part water
Gently dip each paw for 2–3 minutes
Rinse thoroughly with clean water to remove any vinegar residue
Dry the paws well after soaking
Important precautions:
Do not use vinegar on broken skin, cuts, sores, redness, or irritation
Stop immediately if the dog shows signs of discomfort, stinging, or licking excessively
Limit use to no more than 1–2 times per week
Vinegar paw soaks are not a treatment for infections, allergies, or chronic paw problems. If a dog has ongoing paw licking, swelling, odor, or sores, a veterinarian should evaluate the underlying cause and recommend appropriate, dog-safe care products.
What Should Never Be Done
When it comes to vinegar and dogs, certain uses are highly unsafe and should always be avoided:
Never put vinegar in your dog’s ears, especially if there is an infection, inflammation, or a suspected damaged eardrum. This can cause severe pain and worsen the condition.
Never give undiluted vinegar for ingestion. Drinking straight vinegar can irritate the mouth, throat, stomach, and digestive tract.
Never apply ACV or any vinegar to open wounds, sores, or inflamed skin. The acidity can cause intense pain, stinging, and delayed healing.
Following these rules helps prevent unnecessary discomfort and serious health issues. For any medical concerns—such as ear infections, skin problems, or digestive issues—always consult a veterinarian for safe, effective treatment.
Myths About Vinegar for Dogs
Myth | Fact / Vet-Approved Guidance |
ACV kills fleas | The strong smell of apple cider vinegar may temporarily repel some fleas, but it does not eliminate fleas or their eggs. Veterinarians recommend using high-quality flea and tick preventatives for safe and effective control. |
ACV treats yeast infections | There is no solid evidence that ACV can cure yeast infections. Yeast overgrowth often results from allergies or underlying skin issues, and vinegar can irritate sensitive skin. Always consult a vet for proper diagnosis and use antifungal shampoos or medications when needed. |
ACV is a natural antibiotic for dogs | ACV is not a proven antibiotic. Home remedies cannot reliably treat bacterial infections and may delay proper veterinary care. Use vet-prescribed antibiotics or treatments for confirmed bacterial infections. |
Safe Alternatives to Vinegar for Cleaning and Pet Care
To keep your dog safe, it’s important to use vet-approved alternatives to vinegar for cleaning, odor control, and pet care. These products are designed to be effective without irritating your dog’s skin, paws, or digestive system.
Ear cleaners
Virbac Epi-Otic – gentle, vet-recommended for routine ear cleaning
Zymox Otic Ear Cleaners – supports ear health and helps with mild infections
VetOne VetraSeb Ear Wipes – convenient for quick ear hygiene
Hypoallergenic dog shampoos
Oatmeal-based formulas – ideal for dogs with dermatitis or allergies
Fragrance-free, hypoallergenic shampoos – perfect for sensitive skin
Natural, plant-based cleansers – reduce risk of irritation while cleaning
Pet-safe enzymatic cleaners
Nature’s Miracle Stain and Odor Remover – effective for accidents and odor
Rocco & Roxie Professional Strength – enzymatic formula safe for pets
Furniture and chewing deterrent sprays
Copatchy No Chew Spray – discourages chewing while controlling odors
Bitter deterrent sprays – use harmless bittering agents to protect furniture or personal items
These alternatives provide effective cleaning, odor control, and pet safety without exposing dogs to the risks associated with vinegar. They are generally safer for long-term use around pets and can be incorporated into everyday pet care routines.
When to Contact Your Veterinarian
If your dog comes into contact with undiluted vinegar or consumes a large amount, monitor them closely for signs of discomfort and contact your veterinarian immediately if any of the following occur:
Persistent vomiting, diarrhea, or abdominal pain
Redness, irritation, or burning on the paws after ACV exposure
Signs of ear infection, such as scratching, head shaking, or discharge
Dogs with chronic illnesses, puppies, and senior dogs are particularly vulnerable and require prompt veterinary attention even for smaller exposures.
In general, it’s better to contact your veterinarian early rather than wait, especially if symptoms persist or worsen. Early intervention can prevent complications and ensure your dog receives safe, effective care.
Final Verdict: Is Vinegar Bad for Dogs?
Vinegar is not toxic to dogs, but it is generally not recommended due to its high acidity and strong, overpowering smell. While occasional, highly diluted topical use of vinegar or ACV may not harm a healthy dog, there are no proven benefits to internal use, and it can cause gastrointestinal or skin irritation.
Using diluted vinegar as a behavioral deterrent—for example, to discourage chewing or digging—is acceptable only if applied safely and in small, well-diluted amounts. Even then, there are safer, more effective alternatives available, such as pet-safe sprays and positive reinforcement techniques.
When in doubt, consult your veterinarian before using vinegar on or around your dog to ensure their safety and well-being.
Frequently Asked Questions
Is vinegar harmful to dogs?
Vinegar is not inherently toxic to dogs, but it can be harmful if consumed undiluted or in large amounts. High acidity may cause digestive upset, vomiting, diarrhea, drooling, or skin irritation.
Is it safe to use vinegar on a dog's fur as an alternative to shampoo?
Apple cider vinegar (ACV) can be used as a diluted rinse or spray to freshen fur and act as a natural deodorizer. However, it should never replace regular dog shampoo, as it does not clean thoroughly or address skin conditions.
Can vinegar be used to repel dogs from gardens?
Yes, vinegar’s strong smell can act as a temporary deterrent for dogs in gardens or certain areas, as dogs and vinegar don’t go well together. Use highly diluted solutions on the perimeter, and avoid spraying concentrated vinegar directly on plants, as it can damage foliage and grass.
Can we put apple cider vinegar on our dog's paws?
Yes, diluted ACV can be used to help clean or refresh paws for minor irritations or bacteria. Use a 1:1 or 1:2 vinegar-to-water solution in a shallow soak for a few minutes. Do not apply to open wounds, cuts, or raw skin, as it can sting and cause irritation.
How to clean dog bedding with vinegar?
According to the American Kennel Club, add ½ to 1 cup of white or apple cider vinegar to a tub of warm water with pet-safe detergent. Soak and wash the bedding, then rinse thoroughly to remove all soap and vinegar residue.
Do dogs like vinegar taste?
No, dogs generally dislike the strong, pungent taste and smell of vinegar. Its acrid scent is often why it is used as a natural deterrent for chewing or digging.
Is vinegar okay for dogs with fleas?
Vinegar for dogs with fleas is not a reliable kind of treatment. While its strong smell may slightly repel fleas, it will not eliminate fleas or their eggs. Undiluted or concentrated vinegar can also cause skin irritation, stomach upset, or burns. For flea control, always use vet-approved products.
