Ants all over hummingbird feeder
New to N Calif, have many hummingbirds nesting in our yard. Have lots of fushias and native hummer-attractors and also a feeder in place on a obelisk (iron). It has been used alot, but recently small ants have invaded it. The hummingbirds don't want to feed from it. What to do? I spray off the ants with water a few times per day, but then they are back, pronto Do not want to use pesticides.