Is this bedding safe?
Softwood shavings and raw corncob are still on shelves and still recommended by shop staff. This is the mistake that gets made before the animal even arrives.
Every bedding and substrate table
Safe, with a caveat, or never — for each kind we have built a table for, and a general list per category for the rest. These are material judgements rather than brand reviews: there are no product names anywhere on this site, so match the generic description to what the label actually says.
Hamsters
Depth is the whole point. A hamster with 25 cm of paper bedding behaves like a different animal to one with 3 cm.
Safe
With a caveat
Never
Rabbits
Rabbits need a clean, dry, non-slip floor plus a separate deep litter tray. The two jobs need two materials.
Safe
With a caveat
Never
Check and clean the rear daily in warm weather. A soiled or damp rear is what flystrike needs.
Guinea Pigs
Guinea pigs do not burrow, so the priorities are absorbency, dryness and grip.
Safe
With a caveat
Never
Rats
For rats, dust is the whole conversation. Their respiratory tract is the weak point of the species.
Safe
With a caveat
Never
If you can smell ammonia at the cage, the rats have been breathing it for a while. That is a cleaning-frequency problem, not a bedding problem.
Gerbils
Gerbils tunnel. Substrate depth is not enrichment for them, it is the enclosure.
Safe
With a caveat
Never
Chinchillas
Chinchillas must stay dry. Their coat is dense enough that damp against the skin causes fungal problems.
Safe
With a caveat
Never
Geckos
Match the substrate to the species' humidity, and never let a small gecko stand on anything it can swallow whole.
Safe
With a caveat
Never
A humid hide is not optional for most geckos, whatever the main substrate is. Most stuck-shed problems trace back to its absence.
Snakes
For snakes the substrate has to hold the right humidity for the shed, and let the animal get fully under it.
Safe
With a caveat
Never
Stuck shed and retained eyecaps are usually a humidity failure during the blue phase, not a substrate failure afterwards.
Tortoises
Tortoise substrate has to hold a burrow and hold moisture, because dry-brooded tortoises pyramid.
Safe
With a caveat
Never
Other Small Pets
Bedding has three jobs: absorb, stay dust-free, and let the animal dig. Anything aromatic is failing the second one.
This is the general small pets substrate list. It is what the tool answers with for Mice, Ferrets, Hedgehogs, Degus, Sugar Gliders and Opossums — every kind in this category without a table of its own.
Safe
With a caveat
Never
Depth matters as much as material for burrowing species. A hamster needs 25 cm or more of substrate it can actually tunnel through; shallow bedding on a large floor is still an inadequate enclosure.
Other Reptiles
Substrate choice follows the animal's natural humidity, not the look of the vivarium. Get that pairing right and most substrate arguments disappear.
This is the general reptiles substrate list. It is what the tool answers with for Bearded Dragons, Skinks, Monitors, Turtles, Chameleons, Anoles, Uromastyx and Water Dragons — every kind in this category without a table of its own.
Safe
With a caveat
Never
Impaction is far more often a temperature problem than a substrate problem: an animal that cannot reach its digestive temperature will not pass what it swallows, whatever it is standing on.
Other Freshwater Fish
Substrate in an aquarium is a filter as much as a floor. Most of the biology lives in and on it.
This is the general freshwater fish substrate list. It is what the tool answers with for Bettas, Livebearers, Tetras, Danios & Minnows, Rasboras, Barbs, Catfish, Loaches, Goldfish, Cichlids, Gouramis, Shrimp, Pufferfish, Rainbowfish, Killifish and Snails — every kind in this category without a table of its own.
Safe
With a caveat
Never
Other Saltwater Fish
In a marine system the rock and the sand are life support, and how you start them decides the first six months.
This is the general saltwater fish substrate list. It is what the tool answers with for Clownfish, Basslets, Gobies, Cardinalfish, Damselfish, Tangs, Dwarf Angelfish, Blennies, Wrasses, Dragonets, Dottybacks, Shrimp, Hawkfish, Rabbitfish and Snails — every kind in this category without a table of its own.
Safe
With a caveat
Never
The other five
Is it big enough?
Floor area or volume, judged against the recognised standards — all of them, when they disagree.
Open tool →Can it eat that?
Staple, occasional, rare treat or never, with the reason. An unlisted food comes back "not on our list", never a guess.
Open tool →What does it really cost?
Setup, monthly, first year and lifetime, itemised — with electricity worked out from real wattage.
Open tool →Which of these two is easier?
Two species on identical axes: space, company, cost, lifespan and daily time.
Open tool →Is this ammonia reading dangerous?
Free ammonia from your kit's total, the pH and the temperature — the number that actually harms fish.
Open tool →158 care guides, same data
Every number these tools use comes from the species guides — read the one for your animal.
Browse the care guides →