1/3 bar Fels Naptha or other type of soap, (Ivory, Pure & Natural, whatever is cheap)
½ cup washing soda (found in the laundry isle)
½ cup borax powder (also in the laundry isle)
You will also need a 2 gallon bucket
Put 6 cups water in a saucepan and heat. Grate soap into hot water and heat until melted. Add the washing soda and the borax and stir until it is dissolved. Remove from heat. Pour 4 cups hot water into the bucket. Now add your soap mixture and stir. Now add 1 gallon plus 6 cups of water and stir. Let the soap sit for about 24 hours and it will gel. (You use ½ cup per load.)
*You can double the amount of soap, soda & borax if you feel the clothes aren’t coming out bright enough.
*You can also make powder detergent by just mixing the grated soap, soda and borax together without water. (Add 1 Tbsp to each load)
*This costs me $0.01 per load compared to the $0.17 I was paying for my store-bought detergent!