I posted here 2 weeks ago saying that my last 3 flushes -- flushes 7, 8, and 9 --hadn't produced any stones. I used pumpkin seed oil for my 7th and mac nut oil for my 8th and 9th. (Flushes 1-6 were with olive oil.) Well, last night I did my 10th flush and I decided to go back to olive oil. This way, if I didn't get any stones again, I would know it was not because of the different oil.