Who Pays for Bed Bug Treatment in Ontario?

In Ontario, treating a bed bug infestation in a rental unit is the landlord's responsibility and the landlord's cost. This comes from section 20(1) of the Residential Tenancies Act, 2006, which says a landlord is responsible for providing and maintaining a residential complex, including the rental units in it, in a good state of repair and fit for habitation, and for complying with health, safety, housing and maintenance standards.

Bed bugs are not named anywhere in the Act. The obligation exists because an infestation is a failure to keep a unit in a good state of repair and fit to live in. Section 20(2) adds that this applies even if the tenant knew about the problem before signing the lease, so a tenant who moved into a building with a known history has not waived anything.

A tenant does not pay for treatment. A landlord cannot bill a tenant for the exterminator, cannot deduct it from a deposit, and cannot make payment a condition of treating the unit.

There is no section of the Act that says a tenant must cooperate with pest treatment. That surprises people on both sides. The obligation is real, but it is built out of three separate provisions rather than one.

Section 33 makes the tenant responsible for ordinary cleanliness of the unit. That covers laundering bedding and dealing with clutter, which matters because clutter gives bed bugs harbourage and makes treatment less effective.

Section 27 gives the landlord the right to enter on 24 hours written notice, between 8am and 8pm, stating the reason, the day and the time, to carry out repairs, work or an inspection. Treatment and inspection both fall under this. A tenant who refuses lawful entry is the practical problem, not a tenant who is simply untidy.

Section 34 makes the tenant responsible for undue damage caused wilfully or negligently by the tenant, another occupant, or someone the tenant allows in.

The narrow exception is where a tenant's own conduct increased the cost. If a tenant repeatedly refuses entry so treatment has to be rescheduled three times, or ignores preparation instructions so a treatment fails and has to be repeated, a landlord can argue that the additional cost flows from the tenant's conduct rather than the infestation.

That is a harder argument than landlords usually expect. The landlord has to show the added cost and connect it to specific conduct, not to a general impression that the tenant was difficult. Documentation decides these cases, which is why written notices of entry and dated records matter to landlords far more than they realise at the time.

A tenant whose landlord will not deal with an infestation can apply to the Landlord and Tenant Board using Form T6, the Tenant Application about Maintenance. The Board can order a rent abatement, order the landlord to do the work within a set time, order the landlord to pay for belongings that were damaged or had to be thrown out, and in serious cases end the tenancy.

Two practical points decide how these applications go. First, section 30(2) says the Board must consider whether the tenant told the landlord about the problem before applying, so complaints should be in writing and copies kept. Second, section 29(2) sets a one year limitation, but for an ongoing breach the clock does not start until the problem is fixed. A tenant living with an active untreated infestation is not out of time no matter how long it has been going on, which is the opposite of what most people assume.

In Toronto there is a second route. Municipal Code Chapter 629 requires properties to be kept free of pests, and Municipal Licensing and Standards enforces it on a 311 complaint. Officers often ask the tenant to show they asked the landlord in writing first, which is another reason to put the request in writing.

Most of these disputes turn into one person's word against another's. The tenant has bite photographs, the landlord has an invoice from a pest control company saying nothing was found, and the adjudicator has to choose between them.

A canine inspection produces something different: a dated third party report naming the handler and the certified dog, listing each location where the dog alerted, with photographs. It does not decide the case, and it is not a substitute for legal advice. It replaces an assertion with a record, which is usually what these files are missing.