Homemade Laundry Soap
I have four boys......they make a TON of laundry for me to wash. As I type this my couch is overflowing with the stuff from the dryer that I just keep hoping will fold itself; so far no luck. But I will keep hoping.I have no problem buying laundry soap, but in my never-ceasing battle to become more thrifty, I decided I wanted to see if I could make laundry detergent at home and save some cash-ola!
I found a recipe online that makes a large amount of laundry soap with four ingredients; Borax, Felz Naptha, Washing Soda, and water! Simple. Inexpensive and QUICK. 
Recipe
1/3 bar of Fels Naptha
1/2 Cup Borax
1/2 Cup Washing Soda
2-gallon bucket (or a cooler in my case)
Water ( I didn't use an exact number, because it's added in three separate stages)
Grate 1/3 of Fels Naptha soap bar into a medium-sized sauce pan; add 6-cups of water and heat until the soap is melted. Add the Borax and washing soda and stir until combined. Remove from the Heat.
Add 4-cups of HOT water into a bucket; add the soap mixture to the hot water. Stir until combined. After the soap is mixed, add One Gallon of water, plus 6-cups of water to the bucket and stir once more.
Let this mixture sit for 12-24 hours, it will be a runny gel (similar to uncooked scrambled eggs.)
If you're like me and you love to smell of laundry soap, add a few drops of your favorite essential oil, it makes the soap smell fantastic! Good Earth Market has a bunch of different essential oils to scent your soap!
Here is the cost break down for one batch of the soap (remember it makes about 1.25 gallons.)
Fels Naptha-- $.97 cents per bar ( use 1/3 of bar per batch. $.32 cents)
Borax-- $4.29 per 76 oz box (use 1/2 cup per batch. $.22 cents)
Washing Soda-- $2.99 per 55 oz box (use 1/2 cup per batch. $.21 cents)
Total Cost Per Batch: $.75 for 1.25 gallons of detergent.
{ DRUM ROLL PLEASE }
Use 1/2 cup per load of laundry......making the total cost per load of laundry
$.02 cents per load
This soap is safe for all He machines, and is a low suds soap.