I saw a quite large number of wax moth cocoons during the extraction of the feral bee colony in South Leigh. Paul and I were talking about what happens to very old comb. He says that the bees eventually cut the old comb and let it fall. It occurred to me that cavities must eventually become clogged with sections of old comb, unless something else eats it. One candidate would be wax moth.
If wax moths operate around the edge of colonies and in its litter then perhaps they provide some service to the bees, rather than simply being a pest.