They lurk at the back of wardrobes, beneath beds and half concealed under chests of drawers.
Chances are at least a dozen are lying around your home, waiting to trip up the unwary.
But now could be the time to act against the menace of unused coat hangers.
Marks & Spencer has declared an amnesty on all plastic hangers, from whatever store, inviting the public to return them for recycling.
Research suggests Britain has 540 million surplus coat hangers, weighing 17,000 tons.
It is suggested as many as 100million a year are thrown away and sent to landfill, where they take more than 100 years to degrade.