This year, at least here in N. Georgia the bees and wasps have been pretty thick. They are all over the hummingbird feeders. There are a couple of quick fixes for this: 1) apply a bee repellent around the feeder 2) Buy a feeder that doesn’t leak 3) Buy a feeder that has a bee guard.
Here is an example of the no-leak feeder and the bee guards that can go with it. Click Here!