What you need:
Essential oils of your liking
Olive oil (oil base)
I normally use a mixture of lavender essential oil and peppermint. It has a fantastic calming and refreshing smell, it’s also a great mosquito repellent when you get those buggers in your house.
Use about 20-30 drops of each essential oil and fill up the rest of the diffuser with your oil base. I use olive oil for this. This combo should last 2-3 weeks.