I plant flowers in my perennial beds specifically to feed the hummingbird families that come back summer after summer, but I also like to hang hummingbird feeders in the front and in the back of the house. I discovered this clever Ant Moat at Lee Valley Tools that solved my problem of unintentionally feeding the nearby ant colonies:
No matter where you hang your feeder, the ants cannot get to it as long as you keep the umbrella full of water! No more ants in the sugar-water reservoir, no more ants crawling up the pole or the walls of the house to get to the feeder…nada!
UPDATE: Not only do our Ant Moats keep the Hummingbird feeders ant-free, but they provide the small birds in the neighbourhood a perfect place for a drink or a quick bath! An unintended but enjoyable dual function 🙂