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:
500% increase in immigration arrests on the Isle of Man
Due to targeted activity rather than increased criminality
More taxpayers' cash could be spent on 'cleaner heating'
DEFA seeking Tynwald approval for new scheme
RAF veteran says assisting blind climber will be 'massive honour'
Gary helping guide 87-year-old up Ben Nevis
Financial leaders from small countries visiting Island
Delegates from 25 small nations attending seven-day event
New liquor licence proposed to support private events sector
Developed in conjunction between DfE and hospitality sector