I've recently moved into a new house which has an Economy 10 electric meter, which means that electricity is a lot cheaper if we use it between 1pm-4pm, or 8pm-10pm (and also there's a few hours in the middle of the night when it's also cheap).
I don't like to run the washing machine between 7pm-7am because it's really noisy and wakes my baby DD. But if I set the timer so it's on in the period between 1pm-4pm it means the wet washing will be left in the machine for at least a couple of hours as I don't get in until early evening.
So basically, what I'm asking is how long would you leave wet washing in the machine for? Does it get a bit manky if left in?