I have a bunch of a polyethylene net interwoven with a hay, which would be impossible to separate. What is the best way to ecologically dispose of it? Should I give it to separated plastic (so it would be burned in an incineration plant), or put it to the communal waste?
Depends on your local waste service. I’d go for the “everything else” dumpster. Here in NL it is incinerated, which is a decent option for such a mix.