Diy smudge spray longevity

Snowhunter

How long will a homemade smudge spray last? I used spring water, lemon essential oil, some palo santo wood chips, and the following dried herbs: rosemary, cedar tips, rose buds, white sage leaves, and lavender flowers. I also added in a tourmaline chip, and a small piece of amethyst. I really don't want to spritz mold around without realizing it.
 

starsofnorth

My guess would be a week. Maybe keep it in the fridge?
 

Snowhunter

Four ounces lasted about five days :( I'll keep the next batch in the fridge or add some kind of preservative into it. Thank you.