After writing some reviews about kitchen gadgets from the KitchenAid brand we recommend the KitchenAid KFP1466OB 14-Cup Food Processor (We don't have any personal experience with this models). It can do all job needed. You can learn more from the buyer's reviews
I found this information in google, I don't know if it s real or not: " Based on tests by the USDA, putting a sponge through an automatic dishwashing cycle removes up to 99.9998% of the original bacteria that had existed before cleaning. Similarly, a microwave kills up to 99.9999% of original bacteria. Just make sure the sponge is wet if you choose the latter!"