I certainly wouldnt like to find a home for all that but I feel it has more to do with inconsistencies in the machines distinguishing between different types of metal and awarding points accordingly. One trip will bag points for pepsi cans and then another (within a couple of days) will classify them all as tin cans and not give points.

Not the biggest thing to complain about but bloody annoying when you've been saving them up to bag more points.

Ta for your response