Get

In Your Inbox

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

Is Cat Water Additive a Good Idea? Vet Approved Pros & Cons

hepper nom nom cat food bowl water

Dental hygiene plays an important role in a cat’s overall health. It’s essential to develop a dental hygiene regime to ensure the teeth and gums stay healthy in order to prevent other medical problems occurring down the road, such as broken teeth or periodontal disease. Even worse, your cat will constantly swallow bacteria from infected gums, which might cause damage to vital organs.

Suppose your cat has bad breath, which is typically a sign of an oral hygiene issue. The first step is to take your cat to the vet for a thorough oral examination so that the source of the bad smell can be found and treated. Once you’ve made sure your cat’s teeth are healthy, how do you maintain a sweet-smelling, healthy mouth in the years to come? Are cat water additives a good idea? Let’s examine this topic and explore the pros and cons of adding water additives to your cat’s water bowl.

divider 3 paws

Before You Start

Brushing your cat’s teeth a few times a week with a cat-approved toothpaste1 is the single best thing you can do to keep plaque and tartar from forming on the teeth. When plaque hardens, it creates a porous, rough surface that allows bacteria to grow. Once this happens, the only way to truly remove the tartar is by a dental cleaning by your veterinarian. Once your cat’s teeth are cleaned, it’s up to you to keep the teeth and gums healthy.

Additive being poured into glass of water
Photo Credit: miss.lemon, Shutterstock

If you add a water additive to your cat’s water bowl, ensure it is accepted by the Veterinary Oral Health Council (VOHC) for safety. We should note that adding a water additive should not take the place of brushing your cat’s teeth, but for some cat parents, teeth brushing is just not a reality. You can feed a kibble dental diet that gently scrapes plaque as your cat eats to help, but it’s best to use a combination of teeth brushing (if your cat allows it) and dental diets/treats in addition to a water additive.

You can also use a Q-tip to wipe the teeth a couple of times daily to help keep plaque down. Dental wipes are also an effective way to remove plaque before it turns into tartar. Some cats just won’t allow you to do this, so be careful not to get bitten when trying these methods.

Brushing your cat’s teeth takes time and patience. It is important that you are both in a calm mood before starting and that you give your cat the time to become comfortable with each step before moving on to the next one. This video demonstrates the steps and technique well.

divider 3 paws

Pros of Adding a Water Additive

1. Helps Reduce Plaque and Tartar Buildup

As we’ve mentioned, dental problems arise when plaque builds up on the teeth, calcifying and turning to tartar. Tartar below the gum line leads to periodontal disease if left untreated, so it’s imperative to keep your cat’s teeth as clean as possible. When tartar is present, the only way to remove it is through a dental cleaning, which is something only your veterinary surgeon can do and requires a general anesthetic. Studies show that adding a water additive to your cat’s water will help keep plaque down by 50%, which can help keep your cat’s teeth healthy.


2. Freshens Breath

Water additives can help with stinky breath, which is always welcomed! Fresh breath is also a sign that your cat’s dental hygiene is in check.

cat yawning
Photo Credit: wilkernet, Pixabay

3. Fights Bacteria

Water additives can help eliminate bacteria in your cat’s mouth each time your cat drinks water, which is the culprit for plaque formation on the teeth.


4. Provides a Dental Hygiene Alternative

Even though water additives should not take the place of teeth brushing, they can provide some sort of defense for cats who will not allow their teeth to be brushed.


5. Some Come in Various Flavors

All cat owners know it’s a battle sometimes to get a cat to drink water, and some water additives will entice your cat to drink if it’s a pleasant flavor. They also come in tasteless and odorless forms, so you may need to experiment to see what your cat prefers.

Cat with water dispenser
Photo Credit: Creative Cat Studio, Shutterstock

divider 3 paws

Cons of Adding a Water Additive

1. Could Deter Some Cats From Drinking

Again, some cats drink little water, and if you’re a cat owner who feeds mostly wet canned food to hydrate your kitty, water additives may not work. Also, if the water additive has a flavor your cat does not like, it could deter him from drinking water altogether, and you certainly don’t want that to happen—if it does, try the odorless and tasteless form of additive.


2. Less Effective in Automatic Water Fountains

You can use water additives in some automatic water fountains, but keep in mind that the water fountain may cause the additive to lose effectiveness. As the water fountain filters the water, it may inadvertently filter out some of the effective ingredients in the additive.

grey and white kitten drinking water at the pet drinking fountain
Image Credit: Patcharida, Shutterstock

3. Not 100% Effective

Water additives are not a complete solution for dental hygiene for your kitty. While water additives do help with keeping plaque down, it’s not meant to replace brushing your cat’s teeth; however, they are a good alternative if you have no other choice.


4. May Cause Sickness in Some Cats

Some pet parents report their cat developed vomiting and diarrhea after drinking a water additive, so it’s wise to monitor your cat and discontinue use if your cat gets sick. Most water additives use all-natural ingredients, such as green tea leaf extract, glycerin, sodium benzoate, pomegranate extract, and erythritol (a natural sweetener).

divider 3 paws

Conclusion

As long as you buy a water additive that is VOHC-approved, there is no harm in trying a water additive for your cat. Keep in mind that water additives do not work for all cats, and they are not meant to take the place of other dental hygiene regimens, such as teeth brushing and dental diets. Have your cat’s teeth checked yearly by your vet, and if you notice a decrease in appetite or bad breath, take your kitty in for an examination.

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* 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 Catster for pet parents!

Your feedback really matters.

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

Join the conversation

4 Responses

  1. I feed my cats a raw/wet food diet so they dont drink a lot of water as I am adding water to all their food. My question is would it be as affective to use it in the water I add to their food?

    1. Hi Margo, we would not recommend you add them to the food. Please follow the manufacturer’s instructions. If you ever have any questions or concerns regarding your cat’s health please don't hesitate to contact www.pangovet.com; they will be happy to guide you.

  2. Domestic cats are the top hunters of the world. And people want to brush their teeth. I have to laugh because if I tried my cat would attack me. she is so sweet but that would end with me trying that LOL

    I wish I could thought. I use water addictive and greenies and her teeth got better

    1. Hi T,
      Yes, it is challenging to brush a cat’s teeth, especially if not been used to it since kittenhood. We are glad to hear water additives and chews helped your cat. Professional dental cleaning under anesthesia is the only option left for some cats.
      Thanks for reading us.

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

10 Best Kitten Brushes of 2025 – Reviews & Top Picks

Kittens, believe it or not, are delicate creatures, even if they somehow manage to get into trouble more than almost every other creature—usually...

Are Yucca Plants Toxic to Cats? Vet-Verified Ingestion Signs & Treatment

Yucca, a kind of desert plant, is a popular garden plant that thrives in warm, dry areas. They don’t need a ton of...

Why Do Cats Live Longer Than Dogs? 5 Vet-Verified Facts & FAQ

Cats and dogs are the most popular pets around, but these animals are wildly different. There’s a reason we have “cat people” and...

Is Cat Laryngitis Contagious? Health Facts & Care Guide (Vet Answer)

If your cat has recently experienced a change in vocalization, swallowing, or a cough, it is possible that they have laryngitis, which is...

More related

Has Your Cat Imprinted on You? 15 Signs to Look For

Imprinting is a term that is usually used to describe when a young animal accepts another animal, person or object as its parent...

Can Cats Eat Onions? Vet-Reviewed Risks & Dangers

Any cat owner knows that our felines don’t always make the best choices about what they put in their mouth. Even the pickiest...

Why Does My Cat Keep Sneezing? 7 Vet-Verified Causes

Sneezing in cats has several causes. Cats sometimes sneeze to get rid of tickles in their noses, but the reflex can also be...

Prosthetics for Cats: Vet-Verified Info & Success Stories

Prosthetics help restore mobility to pets who’ve lost limbs, by allowing them to walk, jump, and run more naturally. Cats do fine with...

Keep reading

8 Common Litter Box Issues & How to Fix Them

It’s a common myth that cats always use their litter boxes without issue. For the most part, cats indeed learn to use a litter box rather quickly, but this doesn’t mean that you’ll never encounter problems with your cat going...

orange cat beside litter box

How Do Cats Greet Each Other? Feline Communication Explained

We know how cats typically say hello to us, but how do they greet each other? Cats say hello to each other by touching their noses, often followed by mutual head-rubbing and sometimes butt-sniffing. This is because cats largely rely...

two cats_Thomas B., Pixabay

How to Tell if My Cat Has Worms? 5 Vet-Reviewed Signs

Parasitic worms are repulsive to think about, but they’re a common health problem for cats. Along with being off-putting, worms can cause severe complications for your cat if left untreated. Fortunately, worms can be treated safely and effectively in cats,...

cat owner belly rubbing her cat

Why Do Cats Like Cardboard? 5 Interesting Reasons

It’s not a secret that cats have a special affinity for cardboard. Most cat owners have found themselves baffled by the fact that they can spend hundreds of dollars on various cat toys and other products to keep their precious...

cat in a cardboard box

When to Switch From Kitten Food to Cat Food? Vet-Reviewed Facts & FAQ

Cats, like people, have different nutritional and dietary requirements at different stages of life. Kittens have seemingly boundless energy, and they need to consume the nutrients to match this. When they cross into adulthood, they will be burning off a...

little kitten sitting by a bowl of milk

Can Cats Eat Soy? Vet-Approved Nutritional Facts & FAQ

Whether you’re a fan or not, soy products like milk, yogurt, and tofu are nutritious alternatives to dairy and other animal proteins. On the other hand, even if you or your family aren’t crazy about soy, your cat may have...

Can Cats Eat Soy

How to Get Your Cat to the Vet: 6 Vet-Approved Tips If They Really Don’t Want to Go

Going to the vet will be a routine (but hopefully not regular!) part of your cat’s life, but they might never acclimate well. Many cats do not like going to the vet as it raises several anxieties. It changes their...

vet putting bandage on cat after surgery

Birman Cat Health Problems: 14 Common Issues

If you’re a Birman parent—lucky you! These gorgeous purr-machines always win hearts with their beauty and affectionate natures. Cat parenting does come with many worries, though—especially if your furbaby gets ill or you’re concerned about congenital illnesses. In this post,...

Catster_Health Problems of Birman Cats