They seem attracted to sliced bread in plastic bags here in the Nordics. They attach to the end of the bag so as to seal and hold it closed, regardless of the labeling on the bag.

There are some positive side effects to this, which is probably the reason we're so tolerant of their presence.

I’m pretty sure we have bread in plastic bags in Europe too. At least here in the less civilized regions. In these parts they’re usually the plastic-clad aluminum wire sort though.

The UK does, or used to, and yes, it was on the plastic wrappers on sliced bread.

Sweden has a wire encased in plastic thing that crimps the opening shut instead.

Both types are re-usable at least for the expected lifetime of a loaf of bread.