I hung an apple by a string so the chickens would have a treat to eat, I never thought they would eat the string, I didn't see anyone do it, so I'm not positive, but it's a really secure enclosure so I'm sure no one else did. It's been 2 days, no sign of a string in any ones poop...I'm just so worried that it might get stuck inside someone...It was a nylon string around 16" long...Any ideas?