What causes the japeneeze beatle to drop in the bag of the trap?

Question

What causes the japeneeze beatle to drop in the bag of the trap?

Answer 1

they fly madly around the trap looking for the 'ready' female, get tired and then fall in.....

Answer 2

The bags are usually baited with a pheromone to attract the bugs. They can get in, but can't find their way out...

Answer 3

Tr taking a bottle. cut off the part that has the sloped area leading to The neck. turn it around and stick it in so that it says inside

if this doesn't stay try tape. then bait it with some jelly