Here, I'll put the bits you seem to be missing in bold...
"John Davies, nurse at Swansea Bay University Health Board - home to the Welsh Centre for Burns and Plastic Surgery, says he sees around 30 patients with hot water bottle burns every year.
"During the fuel crisis I think people will be using hot water bottles to keep warm rather than putting the central heating on. They are safe to use if you look after them properly," he said.
Janine Evans, an advanced practitioner occupational therapist at the centre where Ms Cowell was treated, said you should not fill hot water bottles with boiling water - and use cooled water from a kettle instead."
So no need to 'remind people not to use them'.