Police in north Staffordshire are using dipsticks to test the contents of youngsters' beverages in a bid to combat under age drinking.
Officers will take to the streets over the summer holidays to tackle youths' attempts to disguise the alcohol they consume by mixing it with soft drinks.
The dipstick changes colour the instant it comes into contact with alcohol, allowing police to seize illegal drinks from under age youths or adults who buy it for them.
This scheme is the latest in a series of measures in towns including Newcastle-under-Lyme, Cheadle, Kidsgrove and Leek. Sgt Steve Thirsk said: "We hope the dipsticks will allow us to seize alcohol from youngsters however it is disguised.
As well as losing their drink, offenders can be issued with an £80 on-the-spot fine or face prosecution.