The herbs will basically do what the herbs will do. With juicing, your body is getting high nutrient juices (with virtually no energy-resources necessary to assimilate & process)...so your body would have all the energy it normally uses for digesting, processing and assimilating the raw foods to use for the cleanse PLUS all the extra fuel from the juices.

So, eating raw foods won't render the cleanse ineffective, but it's likely to be a much more effective cleanse if one does the juicing Schulze suggests. We're asking our body to expend a LOT more energy when cleansing - I think it makes sense to give it all the extra fuel & energy we can :)

Healthiest of blessings,
Uny

The idea behind not eating during the middle three days is that your body puts more resources into cleansing, without the "distraction" of digesting food. Your first cleanse will always be your roughest; after that they get progressively easier.