decorative litter box covers

Who uses them, where did you get them and was it hard to get your cat to use them? I'm talking about the enclosed ones that look like furniture. I'd really like to get 2 (I have 2 litter boxes) but I was wondering if my girls would use them? did your cat have difficulty with the transition?
Thanks everyone

Gary and I are looking into getting rid of our sink and getting a vanity and one of the bowl sinks. And if we do we are going to cut a hole in the side to hide the litter box in. Dont know if it will work or not! But we are hoping!

I have a custom made "hider" for my Litter Robot. Got it here: http://www.hawkswillwoodwork.com/

All of mine took to it well until I got Brillo, who was 3 at the time. I bought a little motion detector nightlite that sticks on the inside with velcro and it will light up when I cat enters and it's been fine.

They really are nice to have...keeps down odor and you can use them as furniture too.

Cally