Silent thieves stole heating oil worth thousands of pounds from village residents while they slept.
Seven homes in Twyford were targeted on Monday night/Tuesday morning.
But the thieves were so quiet nobody heard them, and nobody’s dogs barked.
Five of the fuel thefts took place in Main Street, one in Brook Farm Close and one in Bicester Road.
Imogen Cyster, of Main Street, said: “The first I knew of it was when I went to take the children to school at 8.45am and I could smell oil.
“It was frosty that morning and the whole of that part of the garden was flattened.
“They took just over half a tank so I think that’s worth about £300.”
Mrs Cyster, aged 44, who runs Buckingham Glass with her husband Royston, said:“I was angry really but the children were a bit concerned and upset.”
Mark and Sharon Hallam lost about 800 litres of oil, worth around£500, in the raid.
Mr Hallam said: “Obviously there’s a cost implication because we’d only had the tank filled up about three or four weeks ago.
“But it’s the fact that somebody’s been on to your property while you were asleep and taken something.
“It’s surprising they could take that much oil and not wake anybody up.
“They went to our next door-but-one neighbour and our neighbours on both sides.
“It’s alarming really. It doesn’t make you feel safe.
“My wife’s parents live with us as well and obviously they’re getting on a bit and I think it was a bit shocking and upsetting for them.”
Mr Hallam has now put a fence round the tank and is fitting a lock with an alarm.
Police were in Twyford on Tuesday carrying out investigations and giving safety advice.
PC Nicki Tipping said: “Not one of the tanks was locked.
“I think it’s a wake-up call to the village that they’ve really got to be more vigilant.
“It’s that time of year when people are getting their tanks full for Christmas.”
PC Tipping said the thieves knew what they were doing.
“They haven’t emptied tanks because if a tank goes empty, with a lot of them an alarm goes off,” she said.
“A lot of the victims have got dogs and none of them barked, so they were quite quiet.
“There’s an ongoing investigation but we’ve got no lines of inquiry at the moment.”
Anyone with information should call police on 101.