Here's the ingredients:
One 4 lb 12 oz box Borax (2.15 kg or 76 oz)
One 4 lb box Arm & Hammer Baking Soda (1.81 kg)
One box Arm & Hammer Super Washing Soda 55 oz (3 lb 7 oz)
Three bars of Fels-Naptha soap (shave them using a hand held cheese grater - I tried to use a food processor...this did NOT work well for me but others have said it works okay for them) :)
Two small containers of Oxy Clean or store brand Oxy Clean (you need about 3.5 lbs total (1.58 kg) (this is optional but I added it))
I found all of these items at Walmart in the laundry aisle. I also added some laundry crystals for the scent.
I lined a box (or a bucket would work) with a garbage bag and mixed everything together.
The Fels-Naptha bar shavings look like grated cheese but they dissolve great,
even just washing with cold water.
I found this glass jar at Walmart for about $7 to hold it all.
It only takes a tablespoon or two per load, so this lasts a very long time. The plus side to making this...it makes your house smell INCREDIBLE for several days :D