The biggest advantage of dual gear juicers is their high yield, even more than single auger juicers. However, setting up and cleaning these machines is more time-consuming than single auger machines. Also, as they are more complex they tend to be more expensive. In addition, juicing is slower than with single gear juicers. While wheat grass, herbs, and other leafy produce will self feed as the gears pull inward, a carrot or apple requires considerable force. This is an important note for anyone who has any weakness in their forearm or wrists. If you are interested in “green nutrition” then a dual gear juicer will give you a high yield and simple operation. Juicing soft produce is sometimes a challenge with dual gear juicers. The produce remains inside the machine for a long period of time and the process of juicing requires some patience.