Lure measures 2-3/4" long. Enough to last about 3 months. This lure replicates the nasanov pheromone, or the "come hither" scent scout bees use to mark a potential home site for its swarm. Very effective!
I purchased this swarm lure on May 26th. I placed the lure in one of my two empty hives. As of June 5th, both hives have bees in them. Very happy with the outcome!!