10 Best Water Additives for Cats 2025: According to Reviews | Chewy

The 10 Best Water Additives for Cats

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How we created this water additive list

We leveraged input from our veterinarians and artificial intelligence to identify key considerations to help you find the best water additives for cat.
We scanned thousands of customer reviews and ratings and scored each product based on its performance against each of the key considerations. We then considered how popular a product is with Chewy customers and combined that with its key consideration scores to create the list of the best water additives for cats.

Key water additive considerations

Ease of Use

Effectiveness

Ingredients

Taste

1
Oxyfresh Premium Pet Care Solution Cat & Dog Dental Water Additive, 16-fl oz bottle
Oxyfresh Premium Pet Care Solution Cat & Dog Dental Water Additive, 16-fl oz bottle
Oxyfresh Premium Pet Care Solution Cat & Dog Dental Water Additive, 16-fl oz bottle
Oxyfresh Premium Pet Care Solution Cat & Dog Dental Water Additive, 16-fl oz bottle
Oxyfresh Premium Pet Care Solution Cat & Dog Dental Water Additive, 16-fl oz bottle
Oxyfresh Premium Pet Care Solution Cat & Dog Dental Water Additive, 16-fl oz bottle
Oxyfresh Premium Pet Care Solution Cat & Dog Dental Water Additive, 16-fl oz bottle
Oxyfresh Premium Pet Care Solution Cat & Dog Dental Water Additive, 16-fl oz bottle

Oxyfresh Premium Pet Care Solution Cat & Dog Dental Water Additive, 16-fl oz bottle

Rated 4.4 out of 5 stars
1,941
$17.95Chewy Price
($1.13/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Use

4.3/5
Great

Effectiveness

4.4/5
Great

Ingredients

4.4/5
Great

Taste

4.2/5
Great

Is this water additive right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Water (Aqua), Sodium Benzoate, Sodium Citrate, Stabilized Chlorine Dioxide (Oxygene®), Zinc Acetate

Food Flavor

Unflavored
2
Oratene Enzymatic Brushless Oral Care Dog & Cat Dental Water Additive, 8-fl oz bottle
Oratene Enzymatic Brushless Oral Care Dog & Cat Dental Water Additive, 8-fl oz bottle
Oratene Enzymatic Brushless Oral Care Dog & Cat Dental Water Additive, 8-fl oz bottle
Oratene Enzymatic Brushless Oral Care Dog & Cat Dental Water Additive, 8-fl oz bottle
Oratene Enzymatic Brushless Oral Care Dog & Cat Dental Water Additive, 8-fl oz bottle
Oratene Enzymatic Brushless Oral Care Dog & Cat Dental Water Additive, 8-fl oz bottle
Oratene Enzymatic Brushless Oral Care Dog & Cat Dental Water Additive, 8-fl oz bottle

Oratene Enzymatic Brushless Oral Care Dog & Cat Dental Water Additive, 8-fl oz bottle

Rated 4.3 out of 5 stars
870
$25.79Chewy Price
($3.23/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Use

4.3/5
Great

Effectiveness

4.3/5
Great

Ingredients

4.3/5
Great

Taste

4.1/5
Great

Is this water additive right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Glucose Oxidase, Glycerine, Potassium Sorbate, Potassium Thiocyanate, Purified Water

Food Flavor

Unflavored
3
VETRADENT Dog & Cat Dental Water Additive, 17-fl oz bottle
VETRADENT Dog & Cat Dental Water Additive, 17-fl oz bottle
VETRADENT Dog & Cat Dental Water Additive, 17-fl oz bottle

VETRADENT Dog & Cat Dental Water Additive, 17-fl oz bottle

Rated 4.3 out of 5 stars
549
$14.37Chewy Price
($0.85/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Use

4.0/5
Great

Effectiveness

4.0/5
Great

Ingredients

4.0/5
Great

Taste

3.7/5
Good

Is this water additive right for my pet?

Lifestage

All Lifestages, Adult

Health Feature

Dental & Breath Care
4
Virbac C.E.T. Aquadent Fr3sh Dog & Cat Dental Solution, 16.9-fl oz bottle
Virbac C.E.T. Aquadent Fr3sh Dog & Cat Dental Solution, 16.9-fl oz bottle
Virbac C.E.T. Aquadent Fr3sh Dog & Cat Dental Solution, 16.9-fl oz bottle

Virbac C.E.T. Aquadent Fr3sh Dog & Cat Dental Solution, 16.9-fl oz bottle

Rated 4.2 out of 5 stars
495
$16.77Chewy Price
($1.00/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Use

4.0/5
Great

Effectiveness

4.1/5
Great

Ingredients

4.1/5
Great

Taste

3.8/5
Good

Is this water additive right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

Erythritol, Inulin, Pomegranate Extract

Food Flavor

Unflavored

Health Feature

Dental & Breath Care
5
TropiClean Fresh Breath Dental Water Additive for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive for Cats, 16-fl oz bottle

TropiClean Fresh Breath Dental Water Additive for Cats, 16-fl oz bottle

Rated 4.3 out of 5 stars
321
$14.99Chewy Price
($0.94/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Use

4.3/5
Great

Effectiveness

4.2/5
Great

Ingredients

4.1/5
Great

Taste

4.1/5
Great

Is this water additive right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

Cetylpyridinium Chloride, Green Tea Extract, Zinc Gluconate, Water, Glycerin

Food Flavor

Unflavored

Health Feature

Dental & Breath Care
6
Skout's Honor Oral Care Fresh & Flavorless Dog & Cat Dental Water Additive, 32-fl oz bottle
Skout's Honor Oral Care Fresh & Flavorless Dog & Cat Dental Water Additive, 32-fl oz bottle
Skout's Honor Oral Care Fresh & Flavorless Dog & Cat Dental Water Additive, 32-fl oz bottle
Skout's Honor Oral Care Fresh & Flavorless Dog & Cat Dental Water Additive, 32-fl oz bottle
Skout's Honor Oral Care Fresh & Flavorless Dog & Cat Dental Water Additive, 32-fl oz bottle
Skout's Honor Oral Care Fresh & Flavorless Dog & Cat Dental Water Additive, 32-fl oz bottle
Skout's Honor Oral Care Fresh & Flavorless Dog & Cat Dental Water Additive, 32-fl oz bottle
Skout's Honor Oral Care Fresh & Flavorless Dog & Cat Dental Water Additive, 32-fl oz bottle

Skout's Honor Oral Care Fresh & Flavorless Dog & Cat Dental Water Additive, 32-fl oz bottle

Rated 4.2 out of 5 stars
130
$24.99Chewy Price
($0.79/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Use

4.3/5
Great

Effectiveness

4.1/5
Great

Ingredients

4.1/5
Great

Taste

3.8/5
Good

Is this water additive right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Water, Sodium Citrate, Citric Acid, Disodium EDTA, Potassium Benzoate

Food Flavor

Unflavored
7
Creative Science BreathaLyser Dog & Cat Dental Water Additive, 500-ml bottle
Creative Science BreathaLyser Dog & Cat Dental Water Additive, 500-ml bottle
Creative Science BreathaLyser Dog & Cat Dental Water Additive, 500-ml bottle
Creative Science BreathaLyser Dog & Cat Dental Water Additive, 500-ml bottle
Creative Science BreathaLyser Dog & Cat Dental Water Additive, 500-ml bottle
Creative Science BreathaLyser Dog & Cat Dental Water Additive, 500-ml bottle
Creative Science BreathaLyser Dog & Cat Dental Water Additive, 500-ml bottle

Creative Science BreathaLyser Dog & Cat Dental Water Additive, 500-ml bottle

Rated 4.3 out of 5 stars
117
$19.99Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Use

4.2/5
Great

Effectiveness

3.8/5
Good

Ingredients

4.3/5
Great

Taste

4.2/5
Great

Is this water additive right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

Purified Water, Glycerine, Polysorbate 20, Stabilized Chlorine Dioxide, Potassium Sorbate

Food Flavor

Unflavored

Health Feature

Dental & Breath Care
8
TropiClean Fresh Breath Dental Water Additive + Urinary Tract Support for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive + Urinary Tract Support for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive + Urinary Tract Support for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive + Urinary Tract Support for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive + Urinary Tract Support for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive + Urinary Tract Support for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive + Urinary Tract Support for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive + Urinary Tract Support for Cats, 16-fl oz bottle
TropiClean Fresh Breath Dental Water Additive + Urinary Tract Support for Cats, 16-fl oz bottle

TropiClean Fresh Breath Dental Water Additive + Urinary Tract Support for Cats, 16-fl oz bottle

Rated 4.4 out of 5 stars
19
$15.99Chewy Price
($1.00/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Use

4.4/5
Great

Effectiveness

4.3/5
Great

Ingredients

4.2/5
Great

Taste

4.3/5
Great

Is this water additive right for my pet?

Lifestage

Adult

Top Ingredients

Active Ingredients include Peppermint 132 mg, Yucca Schidigera Extract 132 mg, Proprietary Enzyme Blend 28 mg, Parsley Oil 0.03 mg., Zinc Citrate

Special Diet

Plant Based, Gluten Free

Food Flavor

Cranberry
9
Professional Pet Products ProCare Dog & Cat Dental Water Additive, 16-fl oz bottle
Professional Pet Products ProCare Dog & Cat Dental Water Additive, 16-fl oz bottle

Professional Pet Products ProCare Dog & Cat Dental Water Additive, 16-fl oz bottle

Rated 4.1 out of 5 stars
26
$10.49Chewy Price
($0.66/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Use

4.6/5
Excellent

Effectiveness

4.6/5
Excellent

Ingredients

4.4/5
Great

Taste

4.5/5
Great

Is this water additive right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Purified Deionized Water, Stabilized Chlorine Dioxide, Chlorophyll, Sodium Bicarbonate (Natural Baking Soda), Sodium Benzoate

Material

Plastic
10
TropiClean Drops Cat Dental Water Additive, 2.2-fl oz bottle
TropiClean Drops Cat Dental Water Additive, 2.2-fl oz bottle
TropiClean Drops Cat Dental Water Additive, 2.2-fl oz bottle
TropiClean Drops Cat Dental Water Additive, 2.2-fl oz bottle
TropiClean Drops Cat Dental Water Additive, 2.2-fl oz bottle
TropiClean Drops Cat Dental Water Additive, 2.2-fl oz bottle
TropiClean Drops Cat Dental Water Additive, 2.2-fl oz bottle

TropiClean Drops Cat Dental Water Additive, 2.2-fl oz bottle

Rated 4.1 out of 5 stars
83
$12.99Chewy Price
($5.91/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Use

4.4/5
Great

Effectiveness

4.5/5
Great

Ingredients

4.1/5
Great

Taste

4.0/5
Great

Is this water additive right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

Water, Glycerin, Cetylpyridinium Chloride, Zinc Citrate, Citric Acid

Food Flavor

Unflavored

Health Feature

Dental & Breath Care