Coat Hangers.... he he he

Does anyone out there know how to control the reproduction of coat hangers???
I swear that the ones in this house are multiplying when I am not looking!!!
Do they do it when the door is shut?
Is it when it is dark outside?
For sure they are having some kind of party because when I need one they are all tangled up... like they have been dancing!!
I culled them recently by sending 40 to my mum... but they have continued to reproduce!!! he he he