Don’t wait for residents to report possible bed bug infestations. 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, it is imperative to inspect the reporting unit and all units adjacent (above, below, left and right). This is also the recommendation of HUD and the City of Boston ISD. Early detection is key to preventing an infestation from spreading. During the first 30 days, the bed bugs stay close to the host, so the infestation is localized (mattresses, box springs, bed frames, etc.) Between 30-60 days, they begin to spread around the unit (behind moldings, and into other rooms). After 60 days, wall voids and adjacent units will begin to be affected. After 90 days, bed bug eradication becomes a real battle. Learn more about Inspection and Early Detection here.