Nature is Never Spent

I will be keeping my eye out for the wasp, because I like them and I'm curious, but apparently these are "mass feeders." So if everything is as it should be, there's a tiny egg in the nest along with a much larger food source like a caterpillar or spider for the wasp larvae to munch on once it hatches. So no fear, it sounds like you'd be unlikely to see a wasp on one of these unless you happened to catch it when the nest was being built, or the moment the baby emerged (which could be months later, apparently).

I agree about the solitary wasps, too.