Even though Jake received Lucky Ducks for his birthday almost three weeks ago, I hadn't put batteries in it until today. I didn't have the correct size of battery to begin with, & then they seemed to be having fun without it actually working, so I'd just left them out a little longer. Perhaps I should have kept it that way. They love the game, but Mommy may have to make it mysteriously disappear every few days if they decide they need to play with it constantly. The sound is just a tad annoying. And am I the only one who thinks it sounds more like puppies barking than ducks quacking? Oh well, it's all for the kids, right?