Early detection is key to eliminating bed bug infestations before they can spread. First Stage infestations (1st 3 weeks) are virtually impossible to detect with the naked eye. EHS recommends routine inspections with a certified K9 team of all units in your building; at minimum annually but ideally quarterly – frequency depending on findings and infestation history. When a possible bed bug infestation is reported, EHS performs a "3-D Bed Bug Inspection" by inspecting the reporting unit and all units adjacent (above, below, left and right). Early detection is the only way to prevent an infestation from spreading; during the first 30 days, the bed bugs stay close to the food source, so the infestation is localized (mattresses, box springs, bed frames, etc.) 30-60 days, they begin to spread around the unit (behind moldings, and into other rooms) After 60 days, wall voids and adjacent units begin to be affected. After 90 days, bed bug eradication becomes a real battle. Learn more about Inspection and Early Detection here.