Independent review of cat dental chews and dental treats available in New Zealand — covering effectiveness, ingredients, NZ pricing, and which products are worth buying versus marketing noise.
Last updated
By Jess Aldridge 
Feline Greenies Original Dental Treats are the benchmark — VOHC approved, well-accepted by most cats, and actually available in NZ. Purina Dentalife Daily Oral Care is a legitimate second option at a lower price point. If your cat won’t eat dental treats at all, Tropiclean Fresh Breath Dental Gel is the most practical alternative.
Everything else in this category is mostly marketing. The realistic bar for this product category is: does it have VOHC approval or equivalent clinical evidence? If not, it’s a treat with dental branding, not a dental treat.
This is worth understanding before talking about solutions.
Around 70–85% of cats over three years old have some form of dental disease. It’s one of the most common health conditions seen by NZ vets, and it’s also one of the most preventable. The progression is:
The reason cats are so prone to this is partly dietary (kibble doesn’t clean teeth the way people assume) and partly because cats are difficult to brush. A dog will usually accept tooth brushing eventually. A cat with opinions about their mouth is a different situation.
Dental treats and chews are a partial response to this problem. They’re not sufficient alone, but “not sufficient alone” is different from “not useful.” Used alongside vet check-ups and where possible some brushing, quality dental treats make a real difference.
Two things provide actual dental benefit in treats:
Mechanical abrasion: The treat texture physically scrubs tooth surfaces during chewing. This requires a texture that’s firm enough to require genuine chewing — not one that crumbles or softens immediately in saliva.
Enzymatic action: Some dental treats include compounds (typically glucose oxidase, lactoperoxidase) that disrupt bacterial plaque formation chemically. This works independently of chewing time.
VOHC approval requires clinical evidence that plaque and/or tartar are reduced. It’s not a marketing exercise — it requires actual feeding trials. This is the most reliable single indicator of whether a product does what it claims.
The most widely available VOHC-approved cat dental product in NZ, and the benchmark against which others are measured. Greenies have been clinically shown to reduce plaque by up to 69% and tartar by up to 60% with daily use.
The texture is specifically engineered — they have a crunch-then-resistance quality that creates the abrasion needed for mechanical cleaning. The shape and size are calibrated for cat mouth anatomy, which sounds like marketing but is actually meaningful: the treat needs to be positioned on the tooth in a way that creates contact with the gumline.
Most cats accept them readily. The smell and taste profile is close enough to standard treats that most cats don’t distinguish. If your cat is very food-motivated, use one as a reward after brushing to create a positive association.
Available in chicken, salmon, and tuna flavours. Chicken is the most universally accepted. The “tempting tuna” variety is useful if you have a cat who’s rejected the standard flavour.
One caution: Size the portion correctly. Greenies list feeding amounts by weight — overfeeding a small cat by giving multiple treats daily adds meaningless calories without proportionally more dental benefit.
Purina Dentalife is backed by feeding trials and some product lines carry VOHC approval. The stick format requires cats to chew more extensively than bite-sized treats, which extends mechanical contact time.
The ingredient quality isn’t exceptional — this is a budget product and the formulation reflects that. But if the goal is clinically meaningful dental benefit at a lower price than Greenies, Dentalife delivers it. Available at supermarkets, which makes it the most convenient option in the category.
Check the specific product carries the VOHC seal. Some Dentalife products in the range are not VOHC approved — the seal should be on the packaging, not just on the brand website.
If your cat won’t eat dental treats — and some cats simply won’t, regardless of flavour — a dental gel provides an alternative delivery method. The Tropiclean Fresh Breath gel can be applied directly to the gumline with a fingertip or a small brush, or used as a water additive.
The to-gums gel carries VOHC approval. The water additive version does not — it’s useful for hydration palatability but doesn’t meet the threshold for dental claims. Use the gel formulation if dental health is the primary goal.
Some cats accept fingertip application surprisingly well, especially if you’ve been handling their mouth for regular health checks. Start with small amounts and work up.
Hills t/d is a prescription diet food, not a treat — worth including because it’s a category that NZ cat owners with dental-prone cats should know about. The kibble is oversized relative to normal cat food, forcing cats to bite through it rather than swallow it whole. The matrix is designed to sheath the tooth down to the gumline as the cat bites, which creates the abrasion at the critical zone where plaque accumulates.
If your vet has mentioned your cat’s teeth at a check-up, ask about Hills t/d. It’s more effective than treats used alongside a poor-quality kibble.
Water additives for cats claim dental benefits, but most don’t carry VOHC approval. They’re generally safe and have a secondary benefit of making water more palatable, which encourages drinking — useful since chronic dehydration is a leading contributor to urinary health issues in cats.
If your cat won’t accept dental treats and won’t tolerate gel application, a water additive is better than nothing. Use a product that lists clinical evidence, even without VOHC approval. An automatic water fountain that gets your cat drinking more is likely a better primary investment — hydration supports oral health through saliva production, which has natural antibacterial properties.
The realistic dental care hierarchy for cats, most to least effective:
Most cat owners aren’t doing all of these, and that’s realistic. The goal is moving up the ladder from wherever you’re starting. Daily Greenies is a meaningful improvement over nothing. Adding occasional brushing on top is a further improvement. Annual dental checks catch what home care misses.
One practical note: if your cat has visible tartar already, dental treats won’t remove it — tartar is mineralised and requires professional scaling under anaesthesia. The role of dental treats is prevention and slowing accumulation, not reversal. If you’re starting a dental care routine with an established tartar problem, a vet dental clean first gives you a clean baseline to maintain.
| Product | Type | Price (NZ) | VOHC |
|---|---|---|---|
| Feline Greenies Original | Dental treats | $18–25 / 130g | Yes |
| Purina Dentalife Daily | Dental stick treats | $12–18 / pack | Some SKUs |
| Tropiclean Fresh Breath Gel | Topical gel | $20–30 / 118ml | Yes (gel) |
| Hills Prescription Diet t/d | Dental diet food | $3–5 / day | Yes |
NZ pricing, April 2026. Varies by retailer and current promotions.
Where to buy:
Related guides:
Last reviewed April 2026. Check the VOHC seal on packaging — it’s the fastest way to separate genuine dental products from marketing.
Some do. VOHC (Veterinary Oral Health Council) approved products like Feline Greenies show genuine plaque and tartar reduction in clinical trials. Standard cat treats, crunchy kibble, and most generic 'dental' treats don't provide meaningful dental benefit — the texture isn't abrasive enough and the contact time too short.
Most dental treat products are designed for daily use. For cats with sensitive digestion, start every second day and watch for any loose stools. Always provide fresh water. Dental treats should supplement, not replace, regular dental care — ideally including occasional tooth brushing or at minimum vet dental checks.
Most dental treats are labelled for cats over 12 months. Kittens are still losing deciduous teeth until around 6–7 months, and their permanent teeth are softer initially. From 12 months, adult dental treats are appropriate. Check the label — some brands specify adult cats only.
No. Daily tooth brushing remains the gold standard for feline dental health. Dental chews supplement brushing — they're meaningful when you can't brush, but they don't replicate the mechanical cleaning of a brush on all tooth surfaces, particularly the back molars. A cat who gets both brushing and dental treats has better dental outcomes than one who gets only treats.
Yes. Feline Greenies Original Dental Treats are VOHC approved and available at major NZ pet retailers. Some Purina Dentalife products also carry VOHC approval. Always check the VOHC seal on the package rather than assuming — the same brand can have approved and non-approved products in the same range.
Expect $15–30 per month for daily dental treats for a single adult cat. Premium vet-grade options cost more but often provide better effectiveness per dollar than generic supermarket alternatives. A bag of Feline Greenies costs approximately $18–25 for a 130g package, which lasts around a month for one cat.
Try dental gels or water additives instead — Tropiclean and Logic Oral Hygiene gel can be applied directly to teeth or added to drinking water. A water fountain also helps by encouraging higher water intake, which has secondary oral health benefits. A vet dental clean under anaesthesia resets the baseline when tartar is already established.
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