Duggar's Laundry Soap
"Speaking of homemade detergents, has anyone here tried to make the Duggars homemade soap? They use fels naptha soap, but say you could use Ivory soap too. "
I make one similar (out of my handmade soap), and it works well enough in soft water on lightly soiled clothes. I do like to add about 1/2 cup of vinegar to the final rinse, and that seems to keep the colors bright and the soap from building up as much.