As I mentioned, I am not supposed to use citrus products on my silverware.  I came to realize that I didn’t actually know for a fact that the Cascade I was using didn’t contain citrus, so I emailed the company to inquire.  Here is the actual word-for-word response I got:

Thanks for contacting us. I'm sorry we can't answer your question via email.  Most of the  information we're able to share with consumers is either on our brand or  corporate website (http://www.pg.com).  If you’ve already searched those  sites thoroughly and still can’t find what you’re looking for, please call  us using the toll-free number on our product packages, and we’ll do  whatever we can to help.  We’re open Monday - Friday 9:00 AM - 6:00 PM  EST. Thanks again for writing. P&G Team

I am inclined to think that, in layman's terms, this translates to, "Yes, there is a lot of citrus in our detergent, and there is also a lot of poison.  We are going to let you damage your silverware, and we are dying to replace it for you."