I double my recipe (makes almost a full 5 gal. bucket). I use a whole bar of Fels Naptha, 1 cup washing soda and 1 cup of borax all water is doubled as well. I have been using homemade soap since October with no problems. It actually started as a Science project my daughter was doing for school. Turned out in the experiment that homemade soap and Gain det. got various stains out almost exactly the same. Anyways, I have read online that some people are putting oxy clean into their mixture (there is a knock off at the dollar tree). You can do a search online and find lots of sites with different recipes or people talking about it.
Good luck...
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