Susan from Columbus Oh writes
You do not need to put anything in the well of the trap. Once the insect crawls into outer well it will be trapped as the walls are too slick for the bedbug to crawl back out. The BB Stop is to be used to monitor an infestation, not necessarily to kill the bedbugs. To kill trapped bugs you can crush them or dump them in soapy water or spray them with insecticide (after you remove them from the pitfall trap).
Answer last updated on: 01/11/2013