I am a property manager for downtown Toronto. After contacting many companies for both heat treatment and pesticide spray I went with Bed Bug Killers. They offered something I didn't find with enough places, the ability to treat individual rooms with heat. I had already hired a separate company prior to finding them for a dog to sniff out the bed bugs in multiple units. We had 3 infestations in 3 separate rooms in adjoining units. I used their room by room service and eliminated them quickly. It didn't take long and I have had no need to hire anyone else again. They really do live up to their name. As you can see I would recommend them.