Verified answer

Actually, some plastic bags do taste good to kitties. There are oils used in the process of making the bags, and some types of bags use fish oils which are attractive to cats. It is best to not let them eat the bags, you could end up with a hefty vet bill.

There are 3 reasons that i can think of and they don't actual eat them them chew them up

1 Boredom

2 They like the taste of things used to make the bag

3 They use the plastic like we use a gum to clean our mouth they chew it and swallow it to scrape away hair balls and things in the throat and then sick it up so it doesn't get digested

Why, I really don't know, but you must stop giving him access to them. Your vet bills could wind up costing a lot more than whatever came in the bag.

makes it easy to pick up the poop.