NOW I know why our streets are a mess.

Teenagers admit they drop litter because it is not cool to bin it.

Yet another survey, this time among 13-16 year olds, revealed that this age group is the worst culprits, with boys more worried than girls that using rubbish bins makes them appear soft or uncool!

What an admittance. What are they thinking of?

Thank goodness the Tidy Britain Group has launched a poster campaign featuring pop idols, soap and sports stars to hit home the anti-litter message.