Either place more of them around the house and see if that works. Also add large Combat for the waterbugs. Bugs that don't live in the walls and come from outside have greater chance of thriving in the house. Riddex, which apparently one needs more than one, I don't know how much you have, seems to work on what lives in the walls. I notice some stuff that leaves the walls fall down dead. I do have less stuff. You must put stuff out for the things that left the walls, ie waterbugs. It's un-thorough not to have combat out for the waterbugs. I'm quite sure I'd be infested without combat. Also calk your baseboards. There are no miracle cures for these things. I do more more than one of them, good luck.