When it comes to killing of bed bugs, there are several methods that can be used, these methods include: mechanical, biological and chemical. Among the methods, the most effective one happens to be the chemical because it requires less effort by the user to apply it. The mechanical method, basically, is about the use of physical means like the use of your hand to pick the bed bugs out of where they are hiding. It's very crude and also very ineffective as it's kind of impossible to properly get rid of the insects.
As for the chemical method, it is the ideal method that's mostly used in killing bed bugs. It is very effective and reliable to use. The chemical method talks about the use of chemicals like the insecticides, fungicides, herbicides and rodenticides. Interestingly enough, there are myriad of chemicals but unfortunately, they don't have the same level of effectiveness. You can count on the advise of the dealers of these chemicals for the most effective one to use in killing of bed bugs.