Automatic Litterbox Central

I am looking for information from anyone who uses Precious Cat Senior in their Littermaids. I was wondering how it cleans up. Specifically, I am wondering if you still have to take the Littermaid out to be hosed down inbetween litter changes, or if you can just wipe it down with a cloth without having to move the entire unit. Also, is the Senior litter dusty? I have never used a crystal litter, so I don't have any idea what to expect. Thanks.