You will need:
Castile soap ( I choose Dr Bronners baby unscented)
Foaming pump bottle ( I choose 375ml PET Plastic from Natural good life $5 each)
Filtered colled boiled water or Cooled boiled water to remove any bacteria
Essential oils of your choice I love anything citrus for cleaning, lemon, grapefruit, wild orange or lemongrass OR you can omit these and go for uinscented.
Add your essential oils 15-20 drops shouldbe enough. Fill your bottle approx 1/4 way full with castile soap and top with cooled boiled water (leave a little space at the top for the lid to go on) pop the lid on and your ready to go.
This was one of the first swaps I made and it makes such a difference. I find it so easy to re fill and it lasts for a good week to week and a half and I wash ALOT of dishes.