Let's get one thing straight: cats are not supposed to vomit hairballs weekly. I know it looks "normal" because every cat meme shows it, but a cat hacking up a hairball more than once or twice a month is a signal that something's off — usually that they're swallowing way too much loose fur.
Here's the mechanics: cats groom themselves for 30-50% of their waking hours. Their tongues are covered in tiny backwards-facing barbs called papillae, which catch loose and dead hair. Most of that hair passes through the digestive tract and comes out the other end. The problem starts when there's so much hair that it clumps in the stomach and can't pass — then it comes back up as the classic cigar-shaped hairball.
Why Some Cats Get More Hairballs Than Others
Three factors drive hairball frequency:
Hair length and type. Long-haired breeds (Persians, Maine Coons, Ragdolls) shed more and trap more hair in their coats. But short-haired cats absolutely get them too — some of the worst hairball cases I've seen were domestic shorthairs with dense undercoats.
Grooming habits. Over-groomers — often stressed cats — swallow more hair. So do cats with skin issues that make them lick constantly.
Diet and hydration. A cat eating dry food and drinking too little water has drier stool, which means hair moves through the gut more slowly and clumps more easily. This is why hydration is a bigger hairball lever than most people realize.
Step 1: Brush More, Way More
This is the #1 intervention, and it's free. You're removing the hair before it ever reaches your cat's stomach. For short-haired cats, brush 2-3 times a week. For long-haired cats, daily brushing during shedding season (spring and fall) is non-negotiable.
Use the right tool for the coat. A slicker brush works for most coats, but long-haired cats often need a wide-tooth comb to reach the undercoat. Deshedding tools like the Furminator-style rakes pull out the loose undercoat that regular brushes miss — and that's exactly the hair that becomes hairballs. If you're looking for one, our roundup of the best cat grooming tools covers slicker brushes, deshedders, and combs for every coat type.
Step 2: Feed a Hairball-Formula or High-Fiber Diet
Hairball-formula foods (usually labeled "hairball control") contain extra fiber — both soluble and insoluble. The fiber does two jobs: it helps hair bind to food matter so it moves through the intestines instead of pooling in the stomach, and it makes stool bulkier so hair gets pushed out faster.
You don't have to switch foods entirely. Adding a fiber source works too: canned pumpkin (plain, not pie filling), a teaspoon of psyllium husk mixed into wet food, or a commercial hairball gel. The Cornell Feline Health Center notes that increased fiber and regular grooming are the two most effective strategies for reducing hairballs in cats.
Step 3: Boost Hydration
Dry kibble is only about 10% water; canned food is 70-80%. If your cat eats mostly dry, switching even one meal to wet food improves gut motility and makes hair easier to pass. Many cats also drink more from a running-water fountain than a stagnant bowl — the movement triggers their instinct to prefer fresh flowing water.
I've seen cats double their water intake overnight after switching to a fountain. If yours is a picky drinker, we've compared the best cat water fountains in terms of noise, filter cost, and how easy they are to clean — because a fountain you dread cleaning is a fountain that stops getting used.
Step 4: Consider Hairball Gels and Laxatives
Hairball gels (petroleum-based or malt-flavored lubricants) coat the hair and help it slide through the digestive tract. They work, but they're a band-aid, not a fix — they treat the symptom while brushing and diet address the cause.
Give them a couple times a week during heavy shedding seasons, not daily. Many cats love the malt flavor and will lick it right off your finger, which makes it easy to administer.
Step 5: Watch for the Red Flags
Here's where I want you to pay attention. Occasional hairballs (1-2 a month, especially in shedding season) are manageable. But these signs mean it's time to call your vet:
Hairballs more than once a week. That's excessive and suggests a real grooming or GI issue.
Dry heaving without producing a hairball. Repeated retching with nothing coming up can indicate a blockage — a hairball stuck in the esophagus or intestines, which is a medical emergency.
Loss of appetite, lethargy, or constipation. These can all point to an intestinal blockage from a large hairball.
Sudden increase in hairball frequency. Could signal skin disease, allergies, or stress-driven over-grooming.
The ASPCA recommends immediate veterinary attention if your cat repeatedly tries to vomit but can't, or shows signs of abdominal pain — intestinal blockages from hairballs can be fatal if untreated.
Does Hairball Formula Food Actually Work?
Honestly? It helps, but it's not magic. Studies and veterinary consensus say the fiber boost does reduce hairball frequency in many cats — but if you're brushing regularly and your cat still hacks up hairballs weekly, the food alone won't fix it. I'd use it as one tool in a four-part system: brushing, fiber, hydration, and gels during peak shedding.
And a note on supplements: omega-3 fatty acids (fish oil) improve coat health and reduce shedding at the source — less loose hair means fewer hairballs. It's a slower fix but it addresses the root cause. We've covered digestive supplements for cats if you want to explore that route.
FAQ: Hairball Questions, Answered
Are hairballs dangerous? Usually not — but a hairball that can't pass can cause a life-threatening blockage. Watch for the red flags above.
Why does my cat eat grass and then throw up? Cats eat grass to trigger vomiting when their stomach is irritated (often by hair). It's a natural self-cleaning behavior, and it's fine as long as it's occasional and the grass is pesticide-free.
Should I worry about my kitten getting hairballs? Kittens rarely get them because their coats are fine and they don't groom as aggressively yet. If a kitten is vomiting hairballs, that's worth a vet visit — it can signal parasites or a GI issue.
Do hairball gels cause diarrhea? In some cats, especially if overused. Start with a small dose and see how your cat tolerates it.
Can I shave my long-haired cat to prevent hairballs? A "lion cut" can reduce hairballs, but it removes the coat's insulation and can stress some cats. Brushing is better than shaving for most cats — save the shave for severe matting.
The Bottom Line
Hairballs are a symptom, not a disease. Brush more, add fiber, boost water intake, and keep an eye out for red flags. Most cats go from weekly hairballs to a couple a year with just those changes — and the ones that don't need a vet, not another product. Start with the brush tonight; it's the highest-impact change you can make.