Purple boxes on the side of the highway/interstate?

Question

on was on my way towards cleveland with my aunt, and every couple of miles there were these purple triangle-boxes hanging from the trees on the side of the road. anybody have a clue what they are for?

Answer 1

They're insect traps - there's information here: http://www.cantonrep.com/index.php?ID=41...

http://www.altoonamirror.com/page/conten...

http://web.extension.uiuc.edu/clark/news...