It is always best to use a commercial descaling solution in your cleaner. If you can’t find one or don’t want to buy one, then you can make your own by mixing a quart of water with 1 to 2 ounces of baking soda. This is the solution you are going to be using to descale your machine.
Take this solution and add it into your cleaner.
Put the cap on firmly, plug the machine in and turn it on so it can begin heating up.
Once the unit has heated up, then let it continue to warm for approximately 2 hours.
After it has sat for the requisite amount of time, then use it for approximately one minute.
Turn it off, unplug it and allow it to sit for about 4 hours.
After it has cooled down, empty it out.
Now flush clean, distilled water through it and replace all tanks. You have now descaled your steam cleaner!