There’s a Mouse in my House!


  • Your landlord’s phone number
  • 1 demand letter
  • Your municipal city inspector’s fax number
  • Lots of sealed food containers
  • Plastic bins or plastic bags & hangers

Is something rustling through your apartment at night? Are bags of dry goods being subject to nibbling holes? Are you finding small holes in your dirty clothing? Sounds like a case of mice. Urban mice are small rodents with big ears and thin tails. They are generally grey or brown in coloring and are considerably smaller than their nastier vermin counterpart, the rat. As always, it is your landlord’s responsibility to clear out any pests.


  1. Call your landlord and inform them that your apartment is infested as soon as you see one mouse; do not wait for the problem to solve itself or wait until you see more than one. Once notified your landlord must act immediately to correct the problem; this may require your landlord to hire an exterminator that can completely eliminate all of the mice.
  2. In the meantime, place any food that may come into contact with the mice in sealed food containers.
    Tip: this is a generally good practice to prevent any pests from chowing down on your food.
  3. Place any dirty laundry in either sealed plastic bins or hang your clothing in bags away from the floor.

    If your landlord does not act or the problem persists with extermination or traps:

  4. Write a demand letter and send it through registered mail requesting further action for the removal of the pests.

    If problems persist:

  5. Open a file for a hearing at the Régie du logement.
  6. Fax your local city inspector the demand letter you sent to your landlord.

For more information consult this Handout on Rats and Mice from the Government of Canada.