Have you used Net-Tex Nutri-Drops?: http://www.farmcareuk.com/shop/product/poultry-food-supplements/Poultry-nutri-drops Do they work? Well, badly, in time? What are they like? Are they good value? Do they do what they say they will? And how good are they for disease recovery? If not, what is better? Looking for some vitamin and mineral supplements for my bantam who is slow, lethargic, has no energy, a weak immune system, and a low appetite (very thin), and who is recovering from scaly leg and favus.