Colonoscopy

Colonoscopy prep unsuccessful twice. Has anyone experienced this?

What type of prep did you have to do? I know that there are a couple of different ones out there.

I just had one done for the first time in April. I had to do the gatorade/mirilax/docolax pills. I did just to be safe start a liquid diet two days before the procedure, but that was my choice.

I have to do this too for the first time ever. Feels kind of like a major operation.