FIREFIGHTERS have issued a warning to those that use microwavable wheat bags to stay warm.

Wheat bags are sealed bags filled with grains that can be heated or cooled to provide comfort or pain relief.

The contents can be highly flammable.

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Dorset and Wiltshire Fire and Rescue (DW Fire and Rescue) have issued advice to those that heat wheat bags after one caught fire when being microwaved.

“Wheat bags can provide warmth, relief and comfort when used properly but, as with any product involving heat, there is a danger of fire and a risk of injury if care is not taken,” a DW Fire and Rescue spokesperson said.

The spokesperson added: “Wheat bags available in shops usually contain buckwheat.

“Because the moisture content and volume of filling is known, the manufacturer can recommend safe heating times.

“If you follow the recommended heating time, the bag should not overheat, cause a fire or burn you.

“Homemade wheat bags can pose a greater fire and injury risk, because the moisture content and volume is not known, and the proper heating time can’t be recommended.

“The use of a type of wheat other than buckwheat may increase the risks of overheating, fires and burns.”

The advice from firefighters is:

• Buy a wheat bag from a shop rather than make one at home and ensure there are clear instructions on how to heat it
• Add a cup or bowl of water alongside the wheat bag on the turntable to stop the wheat from drying out
• Make sure that the wheat bag is not heated for too long, or at too high a temperature, and never leave it unattended during the heating process.
• Don’t use if the bag shows any signs of over-use, e.g. discolouration, smell of burning or charring.
• Leave bags to cool on a non-combustible surface, such as a draining board, and never reheat bags until they are completely cooled.

“And remember, in the event of a fire: get out, stay out and call 999,” the spokesperson added.