I save mine up until I've got a spare Saturday and then drop it off. There are loads of places so it's not hard to make a journey in opening hours. Obviously, I'm perfect. Maybe other people just don't think or don't realise - and think they're doing the right thing, that fits in with their availability. Perhaps rather than complaining, ask the shops to put BIG notices up saying that donations left outside cannot be sold and the charity actually has to pay for it's disposal. Maybe then the penny will drop.