We have 12 hens and we're getting 4-6 eggs per day. We were at an auction and got one of those bug zappers for $5. Took it home and plug it in at night. In the morning the chickens come out of their coop and run like mad to the bug zapper where their is a feast each morning. Since then we get a minimum of 7 eggs. No sure if it's because of the bug zapper but it sure didn't hurt!