I'm a laundry expert who can tell you when it's time to swap out your pillows with a simple "fold trick".

Hardly anything is more important for a wonderful night's sleep than the right pillow.

And one lingerie expert has found an easy way to find out when it's time to change your pillows for a good night's sleep.

It's not always easy to know when your pillow needs to be replaced as people get stuck on their current pillows.

Carolyn Forte, director of the Good Housekeeping Institute's Housekeeping Lab, shared a foolproof way to tell when it's time to toss the pillow.

"Plan a shopping spree if you fold your pillow in half and it doesn't spring back," advised Forte.

While that's good advice, there's another surefire way to tell if it's time to replace your old pillow.

It's time to replace them if they give off a strange smell even after washing.

According to Forte, using inserts under pillowcases and washing the pillows every four to six months is one way to extend a pillow's life.

However, depending on whether it is down, fibers or hard foam, not all pillows should be treated in the same way.

While most models are machine washable, some require dry cleaning, so here are some cleaning tips for everyone.

How to wash pillows in the washing machine and how to wash fiber pillows and pillows

Most down and fiber pillows are machine washable, so you can throw them in the washing machine.

To keep the washing machine balanced, Horte recommends having two people wash the pillows at a time.

How to wash solid foam pillows

According to Forte, simply washing them in the washing machine is not enough. Instead of this,

Since you sleep with your head on the pillow every night, the following tips will ensure you get a good night's sleep instead of tossing and turning a moldy pillow.

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