This is the multi-year Q&A sessions held by D&D co-creator Gary Gygax here at EN World, beginning in 2002 and running up until his sad pasing in 2008. Gary's username in the thread below is Col_Pladoh, and his first post in this long thread is Post #39.
Of course they might destroy the items, but that might be difficult, and it would surely not be an incentive for adventurers to risk their lives...