Roxanne, That is WONDERFUL news about your Lucky!! Wheee are so happy that he is stone-free, and whee hope he stays that way. I am a strong advocate for the use of Shilintong, so keep him on that and of course give him extra water when you can. Hugs n' Piggie Kisses to your Special Lucky Boy!!!!!!! Love 'n Wheeeeeeeps, BB, BS, and me :-)