ozbugz on "Trying to work out if gone or not - passives and climbups?"

So I have not seen any signs (bugs, fecal or cast skins) for a while, but keep getting the odd minot skin spot on my head, neck and shoulders (I am pretty much a non responder, didn't know we had bbs until I saw one). Also after treatment I suffered a spate of delusory 'bite' sensations for a while and actually thought we had fleas, but we didn't (my samples were all identified as 'textile' by local entomologist - I really lost the plot for a while there). During that period there were some odd blood spots on the sheets but no other signs. I have also had DE down for a few weeks
However I now find it hard to know if we still have bugs if not. I have a slat bed with encased mattress but am worried there may still be bugs in my wood and metal bed frame. It is DEd but there are joins I cannot take apart.
So, I have ordered BBpassive monitors (thanks Sheree!) and climbups in the hope any bugs in the frame (if any) will make themselves known and can be eliminated. I would be grateful for any comments from the hive mind on this plan.
Thank you!