Still sporting underwear from the last decade?
It may be time to clear out your delicates drawer.
So, what’s the truth?

If you’ve beenkeeping up with washes, you’re likely in the clear.
When they become frayed or the elastic stops working, you’ll know to replace them."
However,Martha Stewartrecommends a gentler option.

Never put delicate stretch fabrics in the dryer, as the heat destroys elastic fibers."
Luckily, these leftover particles are relatively harmless because the amount left behind is almost negligible.