I'm not sure if anyone would know the answer to this question. If you've ever had ants invade your kitchen, you might know that ants leave a pheromone trail for other ants to follow to the food source. That's why you tend to always see ants crawling along the exact same trail that you've previously seen an ant (for example, up the wall right next to the dishwasher or whatever), and unless you wash the trail away with a household cleaner, the ants will keep marching along that same trail (as in the song).
What I'm wondering is, do bed bugs do the same thing? Without going into my whole story, suffice to say that our bed bugs were confined to one room, we had heat treatment, multiple sprays, and a few must have survived because a couple of weeks ago we discovered an adult female crawling up the door frame of an room near the originally infested room. We have subsequently had another thorough spray down of all bedrooms.
My question is, in the event that there are still a few surviving stragglers in the original room after this latest spray, could they (would they) be inclined to follow a pheromone trail left by that adult female, out of that room and up the door frame, like an ant might? In other words, should I clean the hell out of the floor and doorframe or what? Or might the pheromone trail be neutralized/nullified by the most recent spray, which was done all around the perimeters of all bedrooms?