I wouldn't throw anything in with worms that isn't something you would feed crickets, roaches or any other feeder. Things like Greens, lettuce, spinach, fruits like strawberries, oranges, carrots, stuff like that. I also try to buy organic. That's all I feed my roaches/crickets with a side of Purina Cat Chow as dry food. I really don't know too much about worms, I'm just stating what I normally feed feeders.