Comment by lucb1e

Tried this once as well with plastic filler material that said you should visit some website to find a place that takes it back for reuse, and the website referred me to ask the merchant instead

The merchant (who produces the product and fills the boxes from the same country as where I live) ended up finding an answer: the manufacturer does not yet do this in europe

How is this legal to print on your product if you don't offer the service anywhere on the continent...