You do it everyday for a month and they suggest that, if it is your first time, you should do it for 2 or 3 months.  Some people really like the way it works so they stay on it.  I know you are supposed to take about a 5 day break in between months...and during the month, if you want to take a break, you adjust it accordingly to what works with you.  For instance, I was going regularly for the first weeek and half or so and now all of a sudden I am stopped up.  It was suggested that I stop taking the fiber for a few days and increase the time I steep the tea.

I only purchased a one month supply initially to see if it really works or not since I was skeptical - the program is expensive so I didn't want to investment that much money right away.  I figured I could always order more afterwards if I found it to be effective. 

FYI, I have ordered more - for both myself and my husband.

Because the recommendation for someone who has not cleansed before is 2 to 3 months, I bought the 3 month supply ... there was a savings on quantity purchased and shipping was free.  I'm from Canada so I figured I may as well get the full supply and because it was guaranteed if it didn't do anything for me, I could always send it back. 

I've gone through the initial 30 days, took the 5 day break and am on day 3 of the next phase.  So far ... nothing life altering.