A plastic bag, polybag, or pouch is a type of container made of thin, flexible, plastic film, nonwoven fabric, or plastic textile.
Plastic bags are used for containing and transporting goods such as foods, produce, powders, ice, magazines, chemicals, and waste.
It is a common form of packaging.

Most plastic bags are heat sealed together. Some are bonded with adhesives or are stitched.
Can guinea pigs eat plastic bags?
If your guinea pigs need something to chew on then one of the things that you should probably avoid are plastic bags.
There are three good reasons for this;
So if you are looking for something for guinea pigs to chew on, then steer clear of giving them plastic bags.
There are much better things for them to chew on, such as cardboard or paper which will be much better for them.
For more things that guinea pigs can and can’t eat, check out our GUINEA PIG FOOD LIST.