No offense but did you try using smoke on this colony? If its just a worked up European colony they will follow you a ways too sometimes, especially if they were aggravated. Moth balls btw, work as a fumigant & will only work as long as they produce vapor. I've removed two hives that come to mind that had full boxes contained in the wall void where a prior hive was. Best thing is to seal the exterior or have someone else bee proof. If they can't get in, they have no choice but to move on or build externally, which is a gift from above in most cases :)
...JP