Cat Litter Textures & Switching: what should I do first?

Many cats are said to prefer fine-grained, unscented clumping mineral (bentonite clay) cat litter, which feels closest to natural desert sand. Scented cat litters (such as floral or soap scents) may smell nice to humans, but to a cat's sharp sense of smell they feel like an overpowering stench inside the box, causing litter box aversion. When changing litter types, transition gradually over a month—just like switching food—by mixing 10% new litter into the old litter at a time, or set a second box with the new litter next to the current one and let your cat choose.

What should I avoid doing?

Using strongly fragranced cat litter. / Dumping out all the old litter, washing the box, and filling it 100% with a brand-new type of litter on the same day (both their familiar scent and familiar paw feel vanish at once, so they no longer recognize it as their toilet).

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Cat Holding Urine After a Litter Change: Choosing Textures & Materials

🚨 Check first

If you suddenly replace all the litter in the box with large paper pellets or wood pellets one day for human convenience (because it is flushable, lightweight, or tracks less), your cat may dislike the feel under their paws, hold their urine, and develop cystitis or pee on your bedding.

📌 The answer in 3 seconds

Many cats are said to prefer fine-grained, unscented clumping mineral (bentonite clay) cat litter, which feels closest to natural desert sand.
Scented cat litters (such as floral or soap scents) may smell nice to humans, but to a cat's sharp sense of smell they feel like an overpowering stench inside the box, causing litter box aversion.
When changing litter types, transition gradually over a month—just like switching food—by mixing 10% new litter into the old litter at a time, or set a second box with the new litter next to the current one and let your cat choose.

📊 Flowchart

Step 1If you notice litter box accidents or your cat holding their urine, first set out an open-top litter box filled with unscented, fine-grained mineral (bentonite) cat litter and observe their reaction.
Step 2If you want to switch to another material (such as paper, wood, or tofu/soy), sprinkle just a single handful of the new litter on top of the current litter and gradually increase the ratio each week.
Step 3Always keep the litter depth at 5–7 cm (2.0–2.8 in) so your cat's claws do not hit the plastic bottom even when digging vigorously (if the layer is too thin, cats give up on digging and go outside the box).

⭕ Step-by-step fix

Step 1 · What you can do at home right now
If you notice litter box accidents or your cat holding their urine, first set out an open-top litter box filled with unscented, fine-grained mineral (bentonite) cat litter and observe their reaction.
Step 2
If you want to switch to another material (such as paper, wood, or tofu/soy), sprinkle just a single handful of the new litter on top of the current litter and gradually increase the ratio each week.
Step 3
Always keep the litter depth at 5–7 cm (2.0–2.8 in) so your cat's claws do not hit the plastic bottom even when digging vigorously (if the layer is too thin, cats give up on digging and go outside the box).

❌ Never do this

Using strongly fragranced cat litter.
Dumping out all the old litter, washing the box, and filling it 100% with a brand-new type of litter on the same day (both their familiar scent and familiar paw feel vanish at once, so they no longer recognize it as their toilet).

📋 Make notes for the vet

Your notes save automatically on this device, so they stay even without a signal at the clinic.

Your cat

Since when

Symptoms and things to tell the vet

The material (mineral clay, paper, wood, tofu/soy, silica gel, or pellets for a two-tier litter box) and grain size of the cat litter you currently use.
Watching whether your cat lifts their front paws hesitantly or steps gingerly as if they dislike the feel of the litter when entering the box.

Urine

Stool

Photos and items to bring

Notes (breathing rate, amount eaten, times, etc.)