We used to buy them for treats

Jiggy got tired of them and eventually started throwing them back at me. Callie was like Buddy. She'd eat them but wouldn't be super excited about them.
I've had more success with the oxbow papaya/pineapple tablets and the critter berries. Although we have Jiggy who goes crazy for the papaya ones and won't touch the berries and Calypso loves the berries and won't touch the papaya

And of course we indulge them and buy both kinds all the time
