Need to find a way to keep bees off hummingbird feeder, but how?

Question:I have tried vasoline, they dont seem to like it ,but still surround the feeder, Anybody have any adise on what I should do.

Answers:
You may have to change feeders to one with more elaborate bee guards and less dripage. If you can move the feeder to the shades so the sun doesn't heat the air and water inside forcing out the nector, that helps.