Bugs find moist wood as being a comfortable survival ground and therefore make without doubt you stack wood from a pile such a approach air is circulated inside so that the wood remains dry.
There are about 2,000 different species and they're found mainly in tropical countries. https://wiki.insidertoday.org/index.php/Reasons_For_Hiring_A_Pest_Control_Company_For_Your_Treatment_Of_Domestic_Pests