I used these on a home where we knew that the furniture was infected and closed off/tapped and sealed one room with said furniture. The label says something like 72 hours. We kept them secluded for TWO WEEKS, and after we cleared the room, we had another outbreak not two days later and nymphs/adults and eggs were found in places they had not been previous to the inspection.
While this product comes with all kind of promises and even exciting warnings of it's potency all it seemed to have accomplished is making the little bastards mad and bite even more. I live alone and I live clean , I followed all the instructions given to the T and still all that seemed to happen was they got worse.
We enveloped our sofa in plastic and hung one strip at each end. We left that for 7 days. We moved it back in and as I was sitting on it the next night what should appear - yes a nice adult bed bug. Wish I could get my money back.