Start-up Welsh company Revolymer has developed a new chemical base for chewing gum that allows it to be removed from pavements and other surfaces with water or a mild soap solution.

"We have managed to change the surface characteristics of the gum base which will allow a stream of water or a mild soap solution to break the adhesion between chewing gum residues and surfaces such as paving stones, furniture, hair, etc," said Professor Terence Cosgrove, Revolymer's chief scientific officer.

Revolymer is a chemicals company that develops new polymers from existing commodity polymers.