Can Cats munch through sardines?

I need to give my cats program for fleas, and they already ate their regualr food but the prgram needs to stir into food. Can i add it to sardines, can they eat it? Thanks
A bit spicy I would say. I think I would stay away from giving them terrifically much.
I give my cat a sardine or two every once surrounded by a while. As soon as I open up the can he comes running! I don't know if he smells it or just recognize the sound of the can but he comes in and immediately begin meowing. If I don't give him one or two he gets mad at me and ignore me for up to a day! It won't hurt them...in fact, they will probably love it!
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