What could these be for?

[RangerClay]

IT'S ZIKA I TELL YOU!!  Don't hunt there!!!!

[Rebel Darling]

Go to google images and type "mosquito catch boxes".  On the first line of pictures has pretty much what you pictured.

http://northernwoodlands.org/knots_and_bolts/mosquito-trapline

I clearly missed that one...


I'm all thumbs when using Tapatalk

[Mossberg500Guy]

Still don't answer why the tops are off and boxes are wide open.