I have a tempermental mature female who resists using the LR II -- has something to do with the covering over the head.
Anyway, just purchased and installed a PetSafe SimplyClean litter box. She immediately went over to investigate, dig about and left (without doing any business). She quickly returned 10 minutes later, scratch, scratch, scratch . . . aim, release -- cover it up.
Looks like the SimplyClean will work just fine for Minnie. There is another cat in the household - Sebastian who loves using the LRII -- so right now it looks like I have the best of both worlds -- both cats using self-cleaning litter boxes (yippee)

