I have one with both ends cut off and cut up the side for a 'drop cloth' in case I have to kneel or lay down on the ground in the run or on coop floor to fix something....
......guess it would be a 'droppings cloth'..hahaha!
Cut the top, and maybe bottom, off, leaving just the straight cylinder.....
...would still be crinkly but not hard or sharp enough to cut feed bag 'sock' between bottle and teeth.
Might depend on that kind of plastic bottle you are using, most are pretty flimsy in the middle.
Just an idea.
I use them for all kinds of stuff, garbage bag in coop shed, sunshades on coop windows, along bottoms of mesh coop walls to keep bedding in the coop and out the rest of the shed.
I sewed a large bag (straw bale size) to hold a bale from spreading all over the shed after the twine is cut.
Can...