Stay away from Advanced Colon (aka Advanced Cleanse). They advertise a free sample bottle; you pay only shipping (for $3.95 or $4.95 - it seems to vary too). The fine print of the terms says unless you contact them within 14 days of the time they send you your free sample, you will be charged (this seems to vary too) $169.95 to become a "member". Their great and glorious web page with HUGE letters and graphics that pounds home the "free sample - you pay for shipping" makes it hard to see the little Terms & Conditions link at the bottom of the second page of your order form. I didn't even try their product, and offered to send back the full bottle they sent me for a refund of the 'membership' charge to my credit card, but that's not their policy. They will mislead you and outright lie to you. Stay away. Run away as fast as you can, from Advanced Colon/Cleanse.