Confirm the evidence
Look for live insects, cast skins, eggs, spotting and a pattern around sleeping or resting areas. Skin marks alone do not prove bed bugs.
Do not spread the problem
Avoid carrying loose bedding or furniture through common areas. Bag or contain items before moving them and tell the landlord or property manager early in multi-unit housing.
Preparation is treatment-specific
Vacuuming, laundering, heat or encasements may be part of a plan, but preparation instructions depend on the professional method and product label.
Professional help
Bed bugs are one of the household pests where coordinated inspection and follow-up often matter more than a one-time application.
Canadian rule: if a pesticide is part of the plan, use only a product registered in Canada and follow the label for the named pest and treatment location. Provincial and municipal restrictions can still apply.