I've Used Those Recipes on YouTube...
along with several other recipes for homemade laundry "detergent" from the internet. Nearly all of them are based on bar soap, washing soda and borax.
They range from totally ineffective to marginally all right in soft water, but they're a sure ticket to dirty smelly clothes in hard water. There isn't enough chemical to do an adequate job, and the hardness minerals combine with the soap, soda and borax to form scummy, dingy stuff on your clothing....dingy stuff that has an odd odor to it.
I've been playing around with a combination of a couple of recipes, however, and I have found a combo that does work pretty well (I'm enzyme sensitive). It's the combination of the recipes from the dri-pack soapflakes site, and a recipe book I own. Here's what I use. This one has enough soap to do some good, and is easy to store.
Washing Powder
2 4-5 oz bars grated pure soap such as Ivory
1 1 lb box of baking soda
1 cup washing soda
1 cup borax
Mix ingredients and pulverize in a blender or food processor. Store in tightly sealed container until ready to use.
Use about 1/2 cup for a full load in a top loader. Vary amount depending on water hardness, soil level, and machine type. 1 tablespoon of STPP also helps.
1/2 cup of vinegar in the final rinse will aid in removing any soap film.
Please note: This is still not in the same ballpark as regular detergent, but it works well in soft or softened water. It will not perform well if you have hard water, and you're going to end up with dingy, smelly clothes.
Another one I've had success with is old fashioned soap jelly, which is simply a pound of soap grated into a gallon of water, and heated until dissolved. Store in a bucket and use anywhere between 1/2 - 1 1/2 cups per load....again depending on the conditions. (Note: This one does a nice job on hand wash delicates, and gives you squeaky clean hand-washed dishes if you happen to run out of Dawn!)
Have a nice day!
Mike