Life Hack: How to wash a duvet and how often you should do it

Duvets don't need to be washed as frequently as your other bedding items, but they do need to be washed

Duvets generally last up to five years and if you wash it regularly and use a protector, you can extend its life.

When was the last time you washed your duvet? Was it when you spilled some coffee on it, or when toilet training a pet or a toddler went a little wrong? 

Or with nothing like these examples happening, have you never washed it, assuming freshly washed bedsheets are enough?