When someone moved in my house a few years back, I got an infestation. Well I tried it all, And they still persisted! I researched, and found they are drawn to water. Kept all the surface's in the house dry... They still kept coming... Well to make a long story short. I had a sewer vent pipe on the roof that was leaking water right between the walls in between my kitchen and bathroom. I fixed that with some roof tar and they were gone a month or two later. Find where they are getting water from. Eliminate it... And you can finish them.