Despite overwhelming public generosity in response to South Australia's deadly bushfires, scammers are seeking to exploit the unfolding tragedy.

Key points: SA Police are warning anyone contacted by fraudsters to notify them

SA Police are warning anyone contacted by fraudsters to notify them Firefighting efforts remain ongoing, after another house was destroyed on Monday

Firefighting efforts remain ongoing, after another house was destroyed on Monday Recovery efforts are underway, with relief centres flooded with donations

According to South Australia Police, fire victims have reported receiving phone calls claiming to be from banks looking to pass on disaster relief funds.

The fraudulent callers have asked for the victims' bank details, and have also targeted members of the public outside the bushfire regions.

It follows anecdotal reports of looting in bushfire zones, and police have urged anyone contacted by scammers to notify them.

"There have been people in the Adelaide Hills targeted by scams," Senior Constable Mick Abbott said.

"With the fires widely reported in the media, sadly there are people out there — not necessarily from South Australia or even Australia — randomly ringing people in the fire zone area.

"If you do get a call supposedly from your bank regarding disaster relief funds and wanting your bank details, don't give your details over the phone, give us a call and call Scamwatch.

"They can sound quite sincere. You're very vulnerable and you're probably not thinking straight, you're thinking someone's just out there to help you — it'd be your worst nightmare."

CFS crews are continuing to fight the fire, which destroyed another home on Monday. ( Facebook: Eden Hills Country Fire Service )

The Country Fire Service (CFS) is warning the danger from the devastating Cudlee Creek fire in the Adelaide Hills has not yet passed, and that flare-ups are continuing.

The fire remains at watch and act level, and a spot fire that broke out on Monday destroyed a house and came close to another, in addition to the more than 80 houses confirmed to have been lost so far.

"There are areas of concern still out there … we haven't got controlled lines around this," CFS state duty commander Nick Stanley said.

PM visits Adelaide Hills communities

Prime Minister Scott Morrison arrived in South Australia earlier on Tuesday to visit fire-ravaged communities, after visiting affected areas in New South Wales.

Mr Morrison is visiting fire-affected communities. ( ABC News: Casey Briggs )

Mr Morrison met with locals in the Adelaide Hills, where more stories of destruction, but also survival, are emerging and the economic impact of the fire remains unknown.

He also took a swing at the fraudulent callers targeting those impacted by the bushfires across the state.

"I think they're scum. It makes me sick," Mr Morrison said.

"In these fires we have seen the best of Australia, the overwhelming story of these fires is the best of Australians in their response.

"But in some cases we've seen some ugly stuff and they should be ashamed of themselves."

While the fire stopped within metres of the Udder Delights cheese factory at Lobethal, all of its stock was damaged because of smoke and radiant heat.

The company said it would have to dispose of 40,000 kilograms of inedible cheese.

"We've got goat curds, haloumis, Persian fettas, all sorts of white mould, all sorts of blue mould and cheddars. It's all gone," chief executive Sheree Sullivan said.

"We've estimated about 40,000 kilos of cheese is having to go in the bin today. It's quite shocking."

The Cudlee Creek bushfire came to the edge of the Udder Delights factory. ( Facebook: Udder Delights )

Meanwhile, Lenswood wine producer Geoff Weaver — who lost his house in the 1983 Ash Wednesday bushfires — told of how the Cudlee Creek fire spread rapidly to his property, damaging about a third of his crop and destroying his car, two sheds and a cabin.

"A helicopter came over trying to put it out … the whole of the eastern hill of my property was alight," he said.

"I saved my life by going down to the dam."

'This community is amazing': Public praised for generosity

On Monday, the State Government announced it had activated the State Emergency Relief Fund to coordinate monetary donations from the public.

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"There are still fires which are underway in South Australia. They're not controlled. But we are also turning our mind to the disaster recovery," Premier Steven Marshall said.

"As people would be aware, the disaster relief centres have been established at the moment. We have two operational in South Australia, the emergency payments are underway."

Relief centres have been inundated with donations of goods from the public.

"We've never seen anything like this … a non-stop parade of folks donating all manner of things for an hour-and-a-half," Blackwood CFS said on Facebook.

"If anyone doubts our community spirit — show them this. This community is amazing."

A community event in Nairne on Tuesday morning provided families who have lost everything with bare necessities donated by the public.

"We have had toiletries, pantry items, clothes, bedding, linen, animal items," said organiser Michelle Leverington.

"We even had a man — he called me yesterday and said he has a caravan he wants to give to somebody if that person wants to raise their hand."

Flames engulf the roof of a home at Lobethal on Friday. ( ABC News: Chris McLoughlin )

Local supermarket chain Foodland is also offering $500 gift cards to families who have lost homes.

"While $500 is not enough to bring back a home, we hope it can make Christmas a little bit more merry," the retailer said.

Fires inflict physical and mental toll

The Cudlee Creek fire has claimed the life of Charleston man Ron Selth, 69, while others — including local racing identity John Glatz, who suffered burns to 60 per cent of his body — were severely injured.

"Our thoughts and our prayers are with our much-loved committee member, John Glatz and his family," Oakbank Racing Club chairperson Arabella Branson said in a statement on Monday.

Former Oakbank Racing Club chairman John Glatz was badly burned. ( ABC News )

"John's health is a private family matter … we are in contact with John's family, however, we are conscious of the need for their privacy at this stressful time."

SA Health on Monday issued a public health warning about the impact of smoke on surrounding areas, including Adelaide's CBD.

But it has also highlighted the mental health impact of the bushfires, saying it was normal for people to experience psychological distress.

Chief psychiatrist John Brayley said survivors could experience a range of emotional and physical responses, including anxiety, intrusive thoughts, fatigue, headaches and nausea.

"We know the people who stay connected and are with their supports — family and friends — will do better and if somebody does appear to be withdrawing reaching out to talk to them is important," he said.

'Absolute miracle' more lives weren't lost

An airline passenger captured this photo of the fire from above. ( Instagram: shitadelaide/@ellerymelissa )

Some Adelaide Hills residents could be without power for Christmas day, with SA Power Networks saying it could not guarantee every household would have electricity restored by Wednesday.

Spokesman Paul Roberts said crews had to cut short restorative work within the Adelaide Hills on Monday and evacuate amid flare-ups from the fire.

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"For the people to have power in Cudlee Creek by Christmas will depend on what the fire does today and what access we have," he said.

"I'd say there'll probably be some that won't, but we'll be in direct contact with customers as we move through the area and make repairs."

About 170 firefighters remain on the fireground and crews are bracing for more hot weather, with a top of 42 degrees Celsius forecast for Adelaide on Sunday.

"It is an absolute miracle that there haven't been more lives lost with this tragedy," the Premier said.

"We've seen the fires in New South Wales and Queensland go for weeks and weeks and weeks. What we had was very different — a catastrophic day.

"We're very concerned for the longer-range forecast which is showing we are heading towards more difficult days at the end of this year."