Hehe, yeah, my Amanos run away and hide with the KB cory pellets as well.
I had a closer look at my shrimp the KB Algae wafers last night and this morning. There were no shrimp at it this morning but they had a good go at it last night. And I don't think I saw any copper based ingredients or additives either. I doubt they'd go near them if there was anything coppery in them.