What changes the cleaning answer
Use plain paper, paper towels, or other unscented flat paper that lets droppings stay visible.
Visibility matters
Droppings are health information. Loose bedding can hide changes in color, amount, wetness, blood, or undigested food.
Avoid dust and scent
Scented products, shavings, dusty substrates, and litter-style materials can irritate airways or make cleaning harder.
Change it often
Even the safest liner becomes a problem if it stays wet, moldy, or covered in old food and droppings.
Best default
Choose the boring liner that makes daily checks obvious.