When the exterminator does come to your home, he will take the time necessary to go through the entire thing and treat it. At least, he should do this. He will use two types of products.
We called for a moment kill. This pesticide will kill bed bugs as they find them. It can also use this product in large hiding stains that it finds.
The second product that the exterminator will use is that of a barrier. When the product is placed around the home, in and near hiding places, the bed bugs will cross over the barrier and die because of it.
Once the treatment is complete, you will always notice one or two bed bugs around. This is common and as long as their numbers are weak, you can assume that the treatment works. It can take up to two weeks to completely remove bed bugs. Meanwhile, watch them. If you notice additional bed bugs, you can have additional processing performed.
You must not aspire the area in which treatment, especially in the bedroom, has been done. This can remove the barrier too early. Your professional will give you an appropriate chronology here. As we mentioned earlier, bed bugs can lead us to being delusional. Some even feel like the bugs follow them from one place to another.