The Office of Fair Trading is urging people to check the labels when it comes to bedding.
Its warning comes after a 62-year-old from the UK was convicted at Douglas Courthouse of selling unsafe memory foam mattresses without a licence.
Neil Young of Lancashire was given a jail term of six weeks, suspended for two years, after admitting two offences.
John Peet, chief inspector at the OFT, says the prosecution came after painstaking detective work:
Traders on Michael Street feel 'abandoned' by politicians in tough times
So what needs to happen to regenerate Peel's high street?
Airport warns high winds could impact flights
Passengers urged to allow extra time for travel
Bus talks to continue over festive season
Minister questioned over possibility of NYE disruption
Roads in centre of Douglas to close for annual Santa Dash
500 people have signed up to take part in the race
