Even worse are those who stuff these bags through my door (this rather than inborn miserliness is what drove me to use them for garden rubbish) and then FAIL to collect them again.. That really gets up my nose.
As do the Kleeneze/Bettaware people who stick a catalogue through your door with a label saying they will pick it up on Tuesday and never reappear either to collect the catalogue ~leave it on the step if you don't want to order ~ and a month later it is there a soggy lump.