Just this week I bought some Omega One Pond Sticks and Tetra Pond Koi Growth sticks to try for variety. My Hissers do seem to eat them, but the other night I put out a pile of Tetra Flaked Fish Food, and a pile of each of the sticks: The next morning ALL the flakes were gone but most of the sticks were still there... They seem to prefer the flakes over all types of dog food and cat food that I have offered also. When I open the fish flakes container, my cat comes running and tries to eat them too - pushes my hand aside and sticks her face right in the container - what is in those flakes??? :lol: Maybe I should try them...