I use it. Even when the pieces aren't very small, it disappears within a month or two.

I use the packing paper from Amazon without any issues. The Amazon boxes you need to be a little more careful with as the tape they use I have found contains plastic fibers and in my bins they did not break down.

As a rule I remove all tapes as soon as I get home from collecting boxes from the stores. Also shiny stickers. Rather do it now than later when harvesting

Great, because the Mrs. buys a lot of stuff from Amazon and I will have a never-ending supply of bedding.

Whether its paper or cardboard , all stickers and tape needs to be removed. Its remove it now or remove it later as the worms will not eat/process it, the same with any credit cards that might be passed thru a shredder as it will show up later as is.