Cat Litter Buying Guide: Clay, Silica, Wood, Paper and More Compared
Compare cat litter types — clumping clay, silica crystals, pine, paper, corn, wheat and tofu — for odor control, dust, tracking, cat preference and eco impact.
Choosing litter is a balance between what your cat will reliably use and what works for you. Your cat's preference comes first — a litter they dislike leads to accidents. In preference studies, most cats favor unscented, fine-grained, clumping litter that feels like sand.
Litter types rated
| Type | Cat preference | Clumping | Odor control | Dust | Tracking | Eco impact | Cost |
|---|---|---|---|---|---|---|---|
| Clumping clay (bentonite) | ★★★★★ | ★★★★★ | ★★★★ | ★★ (varies) | ★★ | ★ (mined, not biodegradable) | Low–mid |
| Non-clumping clay | ★★★ | — | ★★ | ★★ | ★★★ | ★ | Low |
| Silica crystals / gel | ★★★ | Absorbs, no clumps | ★★★★★ | ★★★★ | ★★★ | ★★ | Mid–high |
| Pine / wood pellets | ★★ | — | ★★★★ | ★★★★ | ★★★★ | ★★★★★ | Low |
| Clumping wood | ★★★ | ★★★ | ★★★★ | ★★★ | ★★★ | ★★★★ | Mid |
| Recycled paper pellets | ★★ | — | ★★ | ★★★★★ | ★★★★ | ★★★★ | Mid |
| Corn / wheat / grass | ★★★★ | ★★★★ | ★★★ | ★★★ | ★★ | ★★★★ | Mid–high |
| Tofu (soy) litter | ★★★ | ★★★★ | ★★★ | ★★★★★ | ★★★ | ★★★★ | Mid–high |
Stars reflect typical products; individual brands vary.
Features that matter
- Unscented. Cats' noses are far more sensitive than ours; heavy perfumes can put them off the box. Good cleaning is the real odor solution.
- Grain size. Fine grains feel better on paws. Large pellets are less popular with many cats but track less.
- Low dust. Better for cats and people with asthma.
- Clumping makes daily scooping easier and lets you monitor urine output — useful for spotting health problems.
Special situations
- Kittens: some vets suggest avoiding clumping litter for very young kittens who might eat it; paper or pellet litters are alternatives until the kitten understands the litter box.
- After surgery: paper-based litter keeps dust away from wounds (ask your vet).
- Declawed or sensitive-pawed cats: very soft, fine litters.
- Long-haired cats: pellets or large-grained litter may stick less to fur.
- Urine sample collection: non-absorbent special litter from your vet.
Changing litter
Don't switch suddenly. Mix increasing amounts of the new litter into the old over a week or two, and watch that your cat keeps using the box. If in doubt, offer the new litter in a second box beside the old one and let your cat choose.
How much to use
Around 5 cm (2 inches) deep for most litters — enough to dig. Check the pack; pellets and crystals are often used at shallower depths.
For set-up, placement and cleaning, see the litter box guide.