We feed hummers too! I live in western KY, so they are plentiful. I make up the food and store it in milk jugs in the refrigerator. The hummingbird website says to not feed the red stuff, but to make your own 1 pt. sugar to 4 pts. water. It does not need to be boiled anymore. We were going through a gallon a day. My hummers will not share though. There's always a dominant one who tries to chase off the others. I always keep them up until a month has gone by without seeing any. They also eat insects, but because their metabolism is so high, they require sugar water or nectar from flowers for energy. If you start to feed them and discontinue, they will die because they are dependent on your feeder.