Hydrogen peroxide was once astaple among American households, serving as acleaning agent for surfacesand even ear piercings.

It turns out, there’s more to the brown bottle than meets the eye.

The Sprucereports that hydrogen peroxide comes in two different varieties with 3% and 10% concentrations.

Hydrogen Peroxide bottle

When it comes to cleaning, the former is most appropriate.

If it bubbles, it’s still good.

If not, toss it,Real Simplesuggests.

Pouring hydrogen peroxide into a watering can

It also whitens your grout when applied with a toothbrush.

A little grime is no match for the solution combined with a little elbow grease!

The Spruce cites the substance as a worthy cleaner when combined with baking soda.

Just see to it your flatware is ceramic before you apply.

Since these often go for weeks without cleaning, this simple trick can keep germs away from your food.