Megatron... He was a good plushie. And huge.

It's not the landlord's responsibility for all pests (mainly, they take care of the one in the walls). Things that got brought in by the owner (like fleas) are usually the owner's responsibility. Montréal law, however, includes Bedbugs in what is under the responsibility of the landlord simply because a) nobody knows how they get transmitted and b) It's a huge problem in Montréal, currently, and they don't want to have people not clean buildings because it's too expensive.