Where I dwell, alas no longer be it the great town of Wigan, we are required to leave a note attached to bin to request more bags. A tag bearing such a request, and designed so as can be looped onto wheelie bin handle is enclosed with every pack of bags.
OK in theory, but two things go wrong.
Someone nicks your new roll of bags, so end up having to intercept bin men to request the provision.
Secondly, stock rotation is very hit and miss: sometimes the bags are fine, and sometimes they have already proceeded too far in their deterioration for their intended use.