You have a secret about your iron: all that grime and crust that forms on the soleplate has been spreading onto your clothes every time you iron. As explained in a 2021 Iowa State University Extension and Outreach article, when your iron has become sticky, is spraying colored water, or is leaving marks on your clothing, then it is a clear indication that there is a build-up of dust, lint, detergent, and starch spray on the plate.
Why your soleplate looks like a crime scene
No one plans on cleaning an iron. It simply sits in a closet, gets pulled out for weddings & internship interviews, and pushed back in with residue. That residue hardens over several months. It's not dirt as we normally think of it; it's mineral deposits from tap water, cooked-on starch spray, and fusible interfacing glue from craft projects, as per the same Iowa State University Extension and Outreach blog. None of that is bad, but none of it is good either, especially when it ends up as a scorch mark on a white shirt.
The easiest 2-ingredient solution that really works
You may avoid the five-star review iron cleaning gel that costs $12. A baking soda-and-water paste can work for some household cleaning tasks. According to a University of Wisconsin–Madison Division of Extension publication, baking soda is useful as a cleaning product because it is an alkaline substance and thus helps break down dirt and grease, and when not completely dissolved, it serves as an abrasive cleaning powder for lifting away dirt without scratching surfaces. Its non-toxic nature is helpful, but check your iron manual before using it on the soleplate.
The step-by-step
This is the real way, not the one that is extended over a 15-minute video.Combine the two ingredients in a roughly 2:1 ratio of baking soda to distilled water, two parts baking soda to one part water, to form a thick, spreadable paste. A mix with more water than baking soda comes out runny and won't hold together on the soleplate, so the powder needs to be the larger share. Note that the iron is unplugged and has cooled down completely; don't do what 50% of the internet is saying with a hot iron. Apply the paste to the soleplate with an old toothbrush, carefully brush, and then clean the dislodged dirt from the brush using a microfiber cloth.
