There is some suggestion that propolis production is linked to hive health… I haven’t read anything specific though (anyone have any links?)
Every time I hear mention of bees trapping SHB, I can’t help but think of this:
Adult beetles can also be fed by bees in the hive via mouth-to-mouth feeding, especially when they are confined to bee-guarded ‘prisons’. The beetles use their antennae to induce guard bees to regurgitate food, which the SHB then consumes.
URL: Small hive beetle « Bee Aware
Another one here citing the original source paper:
Upon locating and entering the host colony, adult small hive beetles seek out cracks and crevices where they hide from bee aggression. These locations are often referred to as ‘prisons’ (Ellis 2005). Remarkably, honey bees station guards around the prisons where small hive beetles hide. The ‘prison guard’ bees keep the small hive beetles confined to the cracks and out of the brood combs where there is an ample supply of honey, pollen, and brood on which small hive beetles reproduce. Small hive beetles do not starve in these prisons as they are able to solicit food from their bee captors. In this behavior, small hive beetles use their antennae to rub the bees’ mandibles and induce the bees to regurgitate. Small hive beetles then feed on the regurgitated food (Ellis 2005, Ellis and Hepburn 2006).
URL: http://entnemdept.ufl.edu/creatures/misc/bees/small_hive_beetle.htm