[…] in 2004, Preston council in Lancashire started to use boards with a peelable plastic film that could be cleaned every day and announced that the board helped reduce gum litter in the town by nearly 80 per cent. In the first year of their use Luton, Bedfordshire, the boards collected in excess of 75,000 pieces of used gum would otherwise have probably ended up on the pavement.
Excerpt from: One Step Ahead: Notes from the Problem Solving Unit by Stevyn Colgan