Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Can Dogs Have Listerine Strips? Vet-Reviewed Risks & Alternatives

Share

Vet brushing dog's teeth

We’ve all been on the receiving end of a licky pooch’s bad breath at some point, and safe to say, it’s not pretty. For some dogs, their smelly breath is so bad that it can clear a room, leading bewildered dog parents to desperately seek relief.

However bad your dog’s breath gets, avoid reaching for human products like Listerine strips or mouthwash to freshen things up because these kinds of products are not recommended, may be unsafe, and are not a long-term solution to the problem. Read on to learn more about why it’s best to keep your dog away from Listerine strips.

divider single dog paw oct 2024

Why Can’t Dogs Have Listerine Strips?

Listerine strips are or are not safe for dogs due to some of the ingredients they contain.  While scientific research into Listerine Strips hasn’t been done, we can make deductions about the potential risks and their unsuitability for dogs by looking at various factors. These include:

Ingredients

Menthol—which is toxic to dogs—is one of the ingredients in Listerine strips. Other common products that often contain menthol include cough drops, chewing gum, and breath mints.  Any product containing menthol could cause gastrointestinal upset because menthol is irritating to a dog’s oral and digestive tissues. If your dog has eaten a Listerine strip or something else containing menthol, call your vet immediately for advice.

Other ingredients in Listerine Strips which could be damaging to your dog include:

  • Polysorbate 80; this is a surfactant that may cause mild allergic reactions in dogs
  • Eucalyptol; oil from the eucalyptus plant that is toxic to dogs. It causes vomiting, diarrhea and weakness.
  • Propylene Glycol: Known to be toxic to dogs

Expert Information

We checked out what vets have to say about the issue of bad breath in dogs. Not one of these sources recommends treating bad breath with human products like Listerine strips or mouthwash, so on that basis alone, it’s best to stick to only products formulated for dogs.

If you need guidance on keeping your dog’s dental hygiene healthy, we suggest you speak to a vet.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our online service where you can talk to a vet online and get the advice you need for your dog — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

Lack of Dog Safety Testing

Listerine strips have been formulated for human use, so are safety tested for humans, not dogs. On that basis, and the fact that they contain ingredients that are toxic to dogs, it’s best to avoid them and similar products completely.

divider dog paws oct 2024

Dangers of Feeding Listerine Strips to Dogs

Based on the list of ingredients in Listerine Strips, there are very real dangers of feeding your dog any at all.  If your dog manages to eat a Listerine strip, they may experience and display signs like:

  • Vomiting
  • Diarrhea
  • Lethargy
  • Abdominal pain
  • Nausea
  • Depression
  • Loss of muscle control

Furthermore, breath-freshening products are not long-term solutions for bad breath in dogs because they do not treat the conditions that may be causing bad breath. If your dog has bad breath, they need to be examined by your vet because dental disease is likely to be the cause.  Your vet will examine your dog’s mouth and advise on a treatment plan, which may involve dental cleaning, tooth removal or at home tooth brushing.

beagle dog lying on bed looking sick
Image Credit: HelgaBragina, Shutterstock

Can Dogs Have Breath Mints?

No. Breath mints and sugar-free chewing gum typically contain xylitol, a sugar-free sweetener that’s toxic to dogs. In addition, though xylitol isn’t an ingredient in Listerine strips specifically, it can be found in various other dental products like mouthwashes, dental floss, toothpaste, and breath fresheners. These products contain varying amounts of xylitol.

Xylitol poisoning can cause a dog’s blood sugar to drop rapidly (within 10–30 minutes).  Hypoglycemia (low blood sugar) is a dangerous condition that can cause collapse and seizures in extreme situations.  If a large amount of xylitol has been consumed, liver failure can occur. Signs to watch out for include being unsteady, seizures, shaking, and weakness. Contact a vet right away if you think your dog may have consumed any amount of xylitol or is showing any of these signs.

divider dog faces oct 2024

How Do I Treat My Dog’s Bad Breath?

Periodontal Disease
You are free to use this image but we do require you to link back to Dogster.com for credit

If your dog has foul breath, the first step is to see a vet as they may have a dental condition like periodontal disease or an underlying health condition (nutritional deficiencies, kidney disease, liver disease, etc. can all be causes of bad breath) that requires treatment.

In some cases, bad breath is caused by foreign bodies stuck in the mouth or the consumption of non-food items that occasionally can get lodged between the teeth or in the roof of the mouth.  Whatever the cause, your vet will be able to let you know if a dental procedure, special dental diet, or another form of treatment is necessary.

If your dog doesn’t have a health issue but you want to prevent bad breath, it’s a good idea to brush their teeth daily with a dog-safe toothpaste. This can help prevent plaque and the development of periodontal disease. Dental chews may also help but they are not as good as brushing their teeth.

You can even get mouthwash formulated for dogs, which is added to their water. However, you should never add human mouthwash to your dog’s water supply because it may contain ingredients—like xylitol and alcohol—that could make your dog very unwell.

divider dog paws 3 oct 2024

Conclusion

In conclusion, you should not give your dog Listerine strips and instead opt for dog-safe products that have been designed specifically for them. Ideally, you’ll want to take your dog for bi-annual health check ups so the vet can get a look at their teeth and make sure they’re in good condition.


Featured Image Credit: New Africa, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Marigold Shocks Her Owner By Delivering 17 Irish Doodle Puppies in a Single Day

The one question vets hate hearing as they ultrasound expectant canine mothers is “how many puppies are there?” The reason is that, on...

Dogster’s Weekly Photo Contest Winners: Out Adventuring (March 12, 2026)

Every week our team gets the privilege of sorting through our readers photos to choose what dogs will win this weeks contest! See...

Ask Dr. Paola- Help! My Dog Gets Reoccurring UTIs (March 9, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

DIY Repellents for the Dog Who Thinks Everywhere Is His Toilet

Dog urine and everything nice have a complicated relationship. One thrives, the other suffers, and if you’re reading this, you already know which...

More related

My Dog Is Constipated & Throwing Up, What’s Wrong? Our Vet Answers

When your dog has two major health signs occurring simultaneously, they should see the vet. Constipation and vomiting together can be due to...

Why Do Dogs Like Stinky Things? Smelly Stuff They Love

Your dog’s sense of smell far surpasses yours—they do have a millions more scent receptors than you, after all. However, their scent receptors...

How Much Does a Maltese Cost? (2026 Update)

Maltese dogs make the perfect companions for people from all walks of life due to their adaptability and often friendly, playful natures. That...

How to Teach a Dog to Smile: 10 Tips & Tricks

Do you want to know how to teach a dog to smile? It’s actually not as difficult as you might think! We will...

Keep reading

10 Best Foods for Golden Retriever Puppies in 2026 – Reviews & Top Picks

Congratulations on getting your Golden Retriever puppy! You are now one of 69 million American households 1 that have welcomed a dog into their lives. Of course, choosing the right food for your pup is a significant decision. A look...

Golden retriever puppy sitting on bowl

10 Best Eco-Friendly & Sustainable Dog Foods in 2026 – Reviews & Top Picks

Many people are implementing more eco-friendly lifestyles to help take care of our environment and those around us. There is no doubt supporting sustainable practices in the pet food industry has some all-encompassing benefits. For eco-friendly pet parents, finding food...

pouring dog food

Ollie vs. The Farmer’s Dog 2026 Comparison: Which Fresh Dog Food is Better?

Fresh, healthy dog food is becoming a popular choice for dog owners around the world, and there is a variety of dog food delivery services that promise to deliver this need. Dog owners have long been concerned about the fillers,...

Dogster_Dog Food Ollie VS The Farmer_s Dog

Weruva Dog Food Review 2026: Pros, Cons, Recalls, and Guide

Review Summary Weruva may sound like an odd name for a pet food brand, but the name was actually inspired by the creators’ cats: Webster, Rudi, and Vanessa. The first syllables of each name were taken and blended to create...

Dogster_Weruva Dog Food Review

5 Benefits of Sweet Potatoes for Dogs: Vet-Reviewed Facts & Considerations

Sweet potatoes are superfoods chock full of many health benefits for humans. They’re loaded with vitamins and minerals and are generally considered a healthier choice than regular potatoes. Since they’re so beneficial for humans, you might wonder if sweet potatoes...

dog smelling the homemade cooked sweet potato on plate

Can Dogs Eat Cod? Vet-Approved Facts & FAQ

Ocean fish like cod can provide many health benefits for humans and our dogs. Cod is a protein-rich fish that is great for dogs, and they can eat it without any problems as long as it’s prepared properly. Of course,...

Can Dogs Eat_cod

Can Dogs Drink Oat Milk? Vet-Reviewed Facts & FAQ

If you’ve recently switched from cow’s milk to oat milk or another plant-based dairy alternative, you may wonder if dogs can drink oat milk. Although dogs do not need to consume milk once they have been weaned from their mothers,...

oat milk in a glass

10 Best Dog Foods for Active Dogs in 2026 – Reviews & Top Picks

If you have an active dog, you may have found that you struggle with keeping weight on your dog, no matter how much you feed them. Some breeds also struggle to maintain their body weight, especially while they’re young. A...

labrador retriever eating dog food

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Dogster Email Newsletter