here's the recipe we use I don't remember where my mom found it I know it was on Pinterest where all great things start with moms
1box super washing soda 3lbs 7oz
1 box borax 4lbs 12 oz
1 box pure baking soda 4lbs
3 bars Fels-Naptha5.5oz
1 container oxy clean 1.3lbs
1 purex crystal container
we grate the bars of felsnaptha into a big bucket then slowly add everything together it is very hard to mix everything but its a very good arm workout and it lasts for a very very long time.