When’s the last time you replaced your pillows?

If you can’t remember…it’s probably time!

A new study in the Washington Post asked experts when we should replace things in our homes.

Ideally, you should swap out pillows every year or two.

Here are six more things you might need to replace:

Fire extinguishers  Most rechargeable ones need a recharge every five or six years…the disposable kind need to be replaced after 12 years.

Smoke detectors  You should replace them every 10 years because they lose sensitivity…carbon monoxide detectors every five to seven years.

First-aid kits  Check the expiration dates on the items inside…some of them expire after three to five years.

Your kitchen sponge  The dirtiest item in your kitchen should be changed every two weeks minimum.

Your toothbrush  Replace this every three to four months or sooner if the bristles look matted or frayed.

Your shower loofah  Get a new one every three months or it’ll end up covered in bacteria.