Firefighters and police officers are gearing up for an increase in arson attacks now that the nights are getting lighter.
Arson attacks tend to increase when the nights get lighter and the weather warms up.
Community Safety Manager Simon Brookes, of South Yorkshire Fire and Rescue, said: “We treat all acts of arson extremely seriously and work closely with South Yorkshire Police to identify those responsible and to prevent further instances occurring.
"These incidents can take up a large amount of time and resources when they could be needed at genuine life-threatening emergencies.”
Sergeant Gillian Blake, of South Yorkshire Police, said: “Arson is a serious crime. First and foremost, it costs lives. But it also destroys the things that people love most - homes, businesses and irreplaceable personal belongings such as family photographs. The impact on people’s lives is huge.
“While we always take reports of arson extremely seriously and take action wherever possible, there are steps which you can take to help safeguard yourself, your loved ones and your property.”
Residents are urged to make sure rubbish and bins are stored securely and are advised to report large amounts of abandoned waste to their local council to avoid arsonists setting it on fire.
Parents who know their children play with matches are urged to contact the fire service, which runs a programme working with children to help them change their ways.
Those with information about arsonists should call South Yorkshire Police on 101.