Exeter police say the problem of legal highs can't be tackled properly until legislation to ban them is introduced.
They're calling on whoever wins the General Election to move forward with proposals for new laws, drawn up under the Coalition government.
Locally the substances have led to at least one death as well as many incidents of violence and anti-social behaviour.
Three arrested after unrest in Plymouth
Man stabbed with a screw driver
They want to stop massive installation
"Shocking act of violence" say police
Photo released after Plymouth sex assault
Plymouth police are appealing for the public's help in tracing a person of interest following a sexual assault in the city on Friday.
Funding crisis causes closures
Five teenagers arrested after North Devon fire
Murder investigation underway
