That's what worries me. My doctor is a thorough no BS kinda guy and told me this stone is NOT soft. He said 'they are not actually as hard as a stone but they are definitely not soft like a raisin'. So being an engineer I don't see how you can get a marble through a straw without problems. I am planning to do the Flush this Friday. My birthday is Sunday and a bunch of us are planning to hit the Renaissance Festival in Crownsville. Judging by all the things I read Saturday is going to be a wasted day but what about Sunday? I've planned on having the trots all day Sat. but will I also feel bad on Sunday? Also what about drinking, ...... the Ren. Fest. is usually a big party day for us. I am 10 days into the parasite cleanse, should I wait another week before doing the flush?