Reddit reviews Bel Air Naturals Aromatherapy Top 8 Essential Oils Set - 100% Pure Therapeutic Grade - Peppermint/Tea Tree/Rosemary/Orange/Lemongrass/Lavender/Eucalyptus/Frankincense - Best for Diffuser (1R)

Daily, I'll have about 1-2 sessions. I use about .15g (half a oven), and I add a stainless steel pipe screen to fill the rest of the oven (so the herb isn't loose.) I can typically get about three sessions on low > med > high temps (make sure you rotate the herb with a pick between sessions.)

Edit:
Cleaning isn't a big problem. The only issue is a stuck mouthpiece every once in a while (if you haven't cleaned it in a week or so), but I recently bought propylene glycol and apply it every cleaning session and have had no problems since.

Edit 2: If you're in a group setting, there's no need for the screen, just fill the oven to a full .3g.

Pardon my ignorance but what is PPG? And how would I go about doing a suspension? I'm not new to the drug, just the ROA.

EDIT: This?

http://www.amazon.com/Natures-Oil-Propylene-Glycol-Grade/dp/B00CRML760/ref=sr_1_3?ie=UTF8&qid=1449107416&sr=8-3&keywords=propylene+glycol

I have been using this shit for over a year. I havn't even put a dent in it. Literally exactly what you need.