A new scheme to help prevent alcohol and drug-assisted sex attacks is being piloted in the west of Scotland.
The purge is aimed at drink and drug-fuelled sex assaults
About 200,000 tamper-free bottle tops are being handed out to 10 licensed premises in an experiment in north Glasgow and East Dunbartonshire.
They are either designed so that a straw can be fitted, or with webbing, making it possible to get drink out but difficult to put anything in.
The anti-spiking campaign is being led by Strathclyde Police.
The move, which also involves a poster campaign, will last over the festive period.
The special bottle tops are virtually impossible to remove without causing damage.
Ch Supt Gordon Meldrum said: "The aim of this initiative is to raise awareness and educate patrons of the dangers associated with drink spiking.
"Keen not to curb anyone's enjoyment, we want to ensure everyone can relax and remain safe during the festive period."
Police advice includes:
- Do not accept a drink from somebody you do not fully trust
- Watch drinks being poured or opened in front of you
- Never leave your drink unattended.
Head of Crimestoppers Stewart McCulloch said: "People should be club and pub savvy when out partying over the festive season.
"These bottle tops provide an ingenious solution which I'm sure will help raise awareness of the growing menace of drug and alcohol-assisted sexual assault."