I did the same thing and bought the toddler ones thinking they were what I wanted. I was told they have them at babiesrus.. I was actually told people had seen them at walmart as well but that's where I looked and I didn't see any.
Hmm.. maybe walmart just doesn't have them. Ill have to look at safeway when I go to town tomorrow. I thought maybe you weren't suppose to give them to babies anymore, they've changed a lot of stuff since dd was a baby