Staying away from any food is vital for it to work. Got to do it on an empty stomach. Eat until 2pm and then have nothing except the potions.
And taking all doses 3-4 hours apart as recommended. That was my experience. I've tried various flushes before but they never worked because I did them wrong. Once I tried to follow protocols there is no end to the crap (!) coming out of you!
These cleanses are fantastic. Really amazing. ALL people should do them.