Over time, grease and general crud get into the grout between tiles, giving a dull appearance and a place for germs to congregate. This formula, aided by a small brush, will brighten things up with little effort.

¾ cup baking soda
¼ cup liquid castile soap
1 tablespoon hydrogen peroxide
15 drops tea tree essential oil

Combine all ingredients in a bowl. Dampen surface to be cleaned with a sponge. Apply cleaning formula with a small brush (an old toothbrush is perfect). Wait a few minutes, then clean the area with small circular motions. Wipe clean with a damp cloth.

Discover more information about
Herbal Household Hacks—A Greener Clean
in the archived edition of our Apr 2014 email reprised and updated in May 2020.

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