Just under ¾ fill the bottle
A couple of splashes
20-30 drops of your choice of essential oil of your choice - Eucalyptus, Tea Tree, Oregano, Doterra Onguard, Lemon grass, Lemon, Lavender and Cinnamon are wonderful. If you're feeling a little low with everything that's going on at the moment, Orange and Grapefruit are really uplifting additions.
Witch Hazel - completely optional, but I'm adding a big splash of it at the moment
EM-1 - wonderful to add if you're living in mold. It won't kill it or eradicate it, but it will help to crowd it out and ease the symptoms