Pair of denim jeans.

Don't wash your jeans

If your jeans aren’t dirty, don’t wash them!

However, make sure you air your jeans between wears to freshen them up.

You can also try the freezer trick: fold your jeans and put them in a sealed plastic bag, then put them in the freezer for 24 hours. Freeze cleaning doesn’t remove dirt or stains, but it does kill the germs that cause jeans to smell.

If the jeans have a stain, try spot cleaning them (with water only) rather than washing the whole garment.