On Sunday, January 6, 2019 at 1:08:49 PM UTC-5, Nil wrote:
Is fibreglass batting insulation considered to be hazardous waste? I
replaced a few feet of it in my attic and put the old stuff in my
regular trash barrel... and the trash crew didn't take it. They emptied
out the stuff in the top half of the barrel, but they left the
insulation below it. Some googling finds people talking about having to
treat the disposal of old loose blow-in insulation with care, but not
much is said about fibreglass batting. Do I have to treat it specially?

I would suspect that the issue isn't that it's fiberglass insulation,
but that it looks like construction debris. Here they won't take that.
It's not hazardous waste. But whatever we think doesn't matter, what
counts is what the local disposal people say the rules are. It's possible
they will accept it at one of their sites, with a fee. Here, you can
get rid of small amounts of construction debris by taking it to the
municipal facility and paying a fee. The fee starts at $5 for a garbage
can size. Another mistake you made was that it sounds like you just
put it in there exposed. If you put it in a garbage bag, they almost
certainly would have taken it. You could mix it in with regular trash,
in garbage bags, a little at a time.