Body of captive container made from old water dispenser bottle.

Have you tried it out yet?

Yes, Worked well, but have now reinforced tube entry onto lid, as it gets pulled left and right when in use. This loosened it. A good amount of hot melt glue and reattached sieve sorted it out. Last swarm I wanted to collect, would have been a good tool to use, except the adjacent building had a power cut!