Help ! Bed bugs in house
We have bed bugs in our basement in one of our rented apartment. 2 roommates. We found out when the tenants noticed bites on their hands .We found some of them and eggs and we treated the room with various steps.Washed, dried and bagged all their clothing.Removed mattress boxes inspected frames and headboards. Vacuumed everything including walls and floors. Steamed every thing .We put bed bug powder in all corners and areas. Sprayed 99% alcohol all over and Raid bed bug spray. Put on box and mattress encasement covers. Everything seemed fine for a month but their back.We didnt see any during this inspection but their coming late at night and biting tenant. We did the treatment of vacuum , spray and powder again and next night same thing. My wife is literally in tears dealing with this and we need your help and recommendations please. Anyone dealt with this and how? Please let us know.