A few months ago, I wrote about how ammo boxes should not be used as geocache containers. One of the reasons is that they’re opaque and that authorities responding to bomb scares can’t see in them and thus will tend to blow them up. Groundspeak, home of geocaching.com, is now selling 3-piece geocache container sets with geocache labels that look suspiciously like Lock ‘n’ Locks with stickers on them. The description of them includes the phrase “…see-through (for safety)…”. So, it would seem that Groundspeak thinks opaque containers are a bad idea, too.