If you’re a pet parent, you already know how important dental care is—but getting your dog to sit still for daily brushing can be nearly impossible. That’s why hypochlorous acid (HOCl) sprays are getting attention among vets and dog owners alike. They’re safe, natural, and simple to use.
The real query, though, is whether or not your dog's teeth can truly be free of plaque using HOCl spray.
The short answer is: No, tartar or hardened plaque cannot be removed with HOCl spray.
Nonetheless, it can improve breath, promote general gum health, and lessen the bacteria that lead to plaque accumulation. Consider it a mild, preventative measure, not a substitute for professional cleanings or brushing.
What Is Hypochlorous Acid (HOCl)?
Your dog's body naturally produces hypochlorous acid, despite the scientific name suggesting otherwise.
Dogs' white blood cells naturally produce HOCl to ward off infections and germs, just like human blood cells do. When stabilized in a spray, HOCl becomes non-toxic, biodegradable, and completely safe if swallowed.
It’s gentle, effective, and makes a great alternative to alcohol-based sprays or chlorhexidine rinses, which can irritate gums or alter taste when used long-term.
Can HOCl Help with Dog Plaque?
In short, HOCl helps prevent plaque, not remove it.
Plaque forms when bacteria in your dog’s mouth combine with food particles. Over time, that soft plaque hardens into tartar, which only a vet can remove.
Everyday use of a hypochlorous acid spray helps kill bacteria before plaque develops tartar. This is how it's beneficial:
- Freshens breath: HOCl reduces bacteria, which reduces odor and that traditional "dog breath."
- Gum health is supported by the fact that fewer bacteria translate into less inflammation, which lowers the risk of gum disease and gingivitis.
- Safe for daily use: Unlike some harsher dental products, HOCl is mild enough to be used on a daily basis.
Therefore, it's a simple, non-toxic method to keep your dog's mouth healthier and cleaner in between brushings and veterinary cleanings, but it won't replace them.
How to Use HOCl Spray for Dogs
Here are some easy methods to incorporate HOCl into your dog's daily routine:
- Direct spray: Once or twice a day, lift your dog's lip and mist along the gum line.
- Wipe method: Wipe your dog's teeth and gums gently with a cotton pad or piece of gauze after spraying.
- Water additive (if pet-formulated): Certain pet-grade HOCl products can be added to water bowls to maintain freshness over time.
Tip: Start slow if your dog isn’t used to dental sprays. Keep the experience positive with treats and praise.
Why Honeydew Labs’ Spray Works for Pet Care
Our Honeydew Labs Hypochlorous Acid Spray was originally designed for skincare—but its clean, dermatologist-inspired formula makes it just as safe for pet use.
It’s fragrance-free, alcohol-free, and safe if licked or swallowed. Pet parents love that they can use the same bottle to freshen their dog’s mouth, clean paws, or soothe minor skin irritation.
Application is quick and even thanks to the fine mist spray; there is no mess, no struggle, and no unpleasant odor.
Other Pet Dental Sprays to Explore
Here are some reliable choices that you can use together with HOCl if you'd like to try products made especially for your pet's dental health:
- For dogs and cats, the VetSmart Hypochlorous Pet Dental Spray helps lessen plaque and bacteria.
- The plant-based TropiClean Fresh Breath Oral Care Spray is a natural breath freshener.
- The only toothpaste authorized by the Veterinary Oral Health Council is Petsmile Professional Dog Toothpaste (VOHC-approved); it is not a spray.
These products can be part of a balanced dental routine alongside regular brushing and professional cleanings.

The Bottom Line
HOCl spray won’t remove hardened plaque or tartar—but it can help stop it from forming.
Used daily, it keeps your dog’s mouth cleaner, fresher, and less prone to gum disease.
For the best dental care, combine regular brushing, professional vet cleanings, and HOCl spray for daily maintenance. Your dog’s teeth—and their breath—will thank you.
While HOCl spray helps with oral hygiene, it’s also fascinating to see how skincare innovations tackle visible signs of aging — like with wrinkle patches that smooth forehead lines.
References
- Block, M.S., & Rowan, B.G. (2020). Hypochlorous Acid: A Review. Journal of Oral and Maxillofacial Surgery, 78(9), 1461–1466. https://doi.org/10.1016/j.joms.2020.06.029
- Veterinary Oral Health Council (VOHC). (2023). Accepted Products for Dogs and Cats. https://vohc.org/accepted-products/
- American Veterinary Medical Association (AVMA). (2021). Dental Care for Dogs. https://www.avma.org/resources-tools/pet-owners/petcare/dog-dental-care
Written by
Honeydew Labs Team