My local garden centre sells the diffuser sticks for 50p but the scented oil is very expensive and seems to contain a lot of chemicals.
Has anyone made their own refill? I was wondering about mixing almond oil and a fragrant oil but the ones I looked at contained alcohol but I don't know why.
I think the tiny sticks are made of bamboo, they seem to have tiny, little holes which I assume have a capillary action for the oil. I wondered if any of the plants in the garden would have a similar structure.
Thanks
