It's been debated and discussed on how high to place swarm traps.
Here's something to share with the group.
I had a fence line between two open fields with a band of trees about
20 feet wide. In this fence line I place three traps. Two box-style,
six-frame nuc box traps hung on trees, in the range of 8' to 10' high,
then a single brood box set on a hive stand about about 12" off the
ground. All three traps had a few frames of old comb and a pheromone
As I checked them today, it was the brood box 12" high that caught a
swarm. There are too many factors between a nuc box and a brood box to
state with certainty that one MUST place traps 8' to 10', but I was
pleased not to have to get my ladder to take this hive home.