No answer to my question yet!

Hi Debbie, here are a couple of recipes ! http://naturesnurtureblog.com/essential-oil-reed-diffusers/

If you are using a cologne/parfum you could just use your light bulbs/lamps to diffuse throughout the room. Saturate a cotton ball and dab scent directly on the bulb or on the inside of the shade. You would not need to dillute the fragrance. You could make sachets and place under cushions/in pillows, etc. or pin small sachets on the inside hem of drape that gets direct sunlight. the warmth would scent your room naturally.

I would imagine distilled water?

https://www.hometalk.com/search/posts?filter=reed%20diffusers

If you are using essential oils, do not use anything but the oil. There are difference kinds of diffusers, check your instructions.

Here's the recipe: Take 1 tsp water-storing crystals, 1 cup hot water, and 20 drops essential oil. Stir together until well mixed. Store in a glass jar with a tight-fitting lid.

Essential oils are all you need.

olive oil

essential oils

I would use distilled water