Are wasp a problem with occupying swarm traps?
The hive I have now was set out for two years as a swarm trap with no takers, not even wasps, before I put a nuc in it.
It was full of frames with foundation; so, no room for wasps, eh?
Plus, it was during the last of 5 years of drought.
We had a great spring last year and may be having another.
Looking forward to this season.