More than 700 acts of vandalism on the police and fire services have been reported in the past two years, new figures have revealed.
Attacks on vehicles, damage to police stations and cells, as well as an attempted break-in at a fire station, were among 728 incidents recorded.
The Liberal Democrats, who obtained the figures using freedom of information requests, said the "selfish" vandalism is "beyond the pale".
A breakdown of the figures show 415 incidents of vandalism relate to Strathclyde Police and 95 to Lothian and Borders Police. Grampian Police said it had experienced 66 incidents of vandalism including damage to cells and vehicles.
Fife Fire and Rescue Service recorded five acts of vandalism, with missiles being thrown at fire engines. Dumfries and Galloway firefighters reported an unsuccessful attempt to break into a fire station last year, resulting in a damaged door.
Alison McInnes, justice spokeswoman for the Lib Dems, said: "We rely on our emergency services to perform tough jobs in demanding circumstances. Sadly, each year we hear further horror stories about attacks on emergency workers.
"Our recent figures showed that over 3,000 working days were lost due to attacks on police officers and staff. Now, our figures show that police and fire services have been on the receiving end of 728 incidents of vandalism since 2011. These range from damage to police and fire vehicles to the senseless and crude vandalism of police cells.
"Acts of vandalism to our emergency services is beyond the pale. Clearing up the mess left by vandals diverts resources away from our emergency services at a time when budgets are already facing significant constraints."
The majority of vandalism relates to police forces, with 714 incidents recorded. Fire services were the target of the remaining 14. Tayside Fire and Rescue said one graffiti incident resulted in clean-up costs of £460.
Ms McInnes said: "Most people in Scotland hold a deep respect for our emergency services and the inspirational work they do. It is shameful that a minority of people are letting down our communities with their selfish acts of vandalism upon police and fire equipment."