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Are cedar shavings toxic to mice?

Toxic for mice

Do not use cedar or pine shavings for mice. Merck says their oils may irritate a mouse's airways, and PDSA and the RSPCA advise against wood shavings. Source: Merck Veterinary Manual, PDSA, RSPCA

Conditions

  • Merck recommends paper-based bedding, which is not dusty and is digestible if eaten. Source: Merck Veterinary Manual

Risks and signs

  • Cedar and pine oils may irritate a mouse's airways. Source: Merck Veterinary Manual
  • Wood shavings can cause breathing problems. Source: PDSA

Sources

  1. Merck Veterinary Manual: Providing a Home for Mice (opens in a new tab)

    “some types of wood (cedar and pine) contain oils that may irritate the mouse's respiratory system”

    Read on 10 October 2026

  2. PDSA: Mice as pets (opens in a new tab)

    “Avoid wood shavings or sawdust as they can cause breathing problems.”

    Read on 10 October 2026

  3. RSPCA: Creating a good home for mice (opens in a new tab)

    “Don't use fine sawdust, wood shavings or aspen bedding – they can cause health problems – or any fragrant and coloured material.”

    Read on 10 October 2026

  4. Merck Veterinary Manual: Providing a Home for Mice (opens in a new tab)

    “Commercially available paper-based bedding is the best choice for bedding, as it is not dusty and is digestible if eaten.”

    Read on 10 October 2026

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