I am giving Nektar 2 stars only because I do enjoy their berry bowls. I recently did the 1 day classic cleanse though which was a different experience entirely. I do have a very nice juicer at home - just thought the Nektar cleanse would be more convenient. The green juices included were disgusting. I choked down two of them, but just couldn't finish the third. They taste like I imagine the slime would taste at the bottom of a vase of flowers that has gone bad. In my opinion, this is because the juices are not as fresh as they should be. Fresh pressed juice should be consumed within 48 hours. These are quite a lot older than that.
I picked up my pre-ordered bag of juice on 3-26. The bag designated for me had a tag on it that said it expired the next day. I saw a bag in the fridge with a tag that said it expired on 3-31. I asked if I could have that one thinking it would be fresher. I was told it really didn't matter since all the bottles were shipped to that location anyway. When I got the 3-31 bag home it also had bottles that expired 3-27! So anyway, kind of proves the point that if you are picking up a bag on 3-26 where some of the bottles in it expire 3-31 they are in the habit of keeping this juice around way more than 48 hours. Also they don't care much about when things expire apparently.
I had been under the impression the juice cleanse was made on site. It is not. Without even thinking about it I assumed organic ingredients would be used. Not the case. I think there is quite a bit of form over substance going on with Nektar.
Just make your own juices at home from fresh, organic, locally sourced ingredients if you can get them. A little more trouble but well worth the effort.