Live mealworms are pretty important to start them off with. I feed Purina Fockraiser as a maintenance feed to my two adults right now. For the first few days, cut up live leaworms (so they still flop around a bit after being cut) and toss those for them. They'll learn that they're good, and chase after them. Then gradually start putting little piece of feed inside of the mealworms. Get them eating it that way. Then toss the cut mealworms in a small, shallow, dish of water. A jar lid works well for this. Start tossing both food and mealworms into the water for them to eat. They should eat them. Then, fill the lid with dry food, and cut mealworms. They should start eating both. Eventually, wean off the mealworms and just use the dry food. Pick at it with your fingers to encourage them, toss it in water, etc. I love the Mazuri for this, because the ducklings love dabbling in water, and, since it floats, readily take to it. The whole first week usually is just getting them to eat using the steps above. They will eventually figure it out.