32 oz bottle or use old shampoo bottle- can always adjust measurements to the size of the bottle and what measurements of b.soda work for you
water(if you can use distilled the better)
Warm 2 (12oz) glasses of water into the pan. You just wanna get it warm. Then mix in 4tbs of baking soda & stir for an extra minute then pour mixture into large bottle.
*If you have hard water/well water, here is what to do. Bring 1 quart of water to a boil. Turn off heat and add b. soda. It will really foam up so make sure your pot is big enough. Give it a little stir just to make sure all the soda dissolved and let it sit until cooled.