I mix Sun and Foca powder (medium box and medium bag in a 5 gallon bucket). It's the best thing I've found to work with allergies and get the diapers clean. I can't even touch Tide or Gain without getting hives.
Will this help with the urine smell? I use liquid detergent, vinegar and baking soda instead of bleach. I've noticed a faint odor in my clean diapers! I hope this will work!