Hmmm, I tried the water bottle with two treats inside. Not much of an interest by Schatzie. Then came in Annabelle, nope she cared not either. They acted spoiled like, "heah, it don't squeek, kinda hard to bite, nope don't care, whatelse ya got?" Good grief...I left it on the floor for two days, they only walked around it. Oh, well I tried. I even rolled it across the floor, showed them the treats inside and all. Maybe Im not doing this right?