Small Hive Beetle would probably still be running around in there with the bees. The bees usually chase them up to the top of the hive and try to corral them. They will even overwinter with the cluster. If you have seen some SHB around, but not in the hive, I would go ahead and install some beetle blasters aka beetle jails. They are a great way to tell if you have some lurking around and they are chemical free.
I ran them in my hive last year with Carni's with goods success. This year my hive has russian bee's, and nary a one was found in the traps (yet I have seen them in the hive top feeder) :eusa_think:
I second the advice however, cheap and easy, little to no downside.
- K