Humming Bird Feeder?

Im having issues with my hummingbird feeder. I cant keep the ants out of it. I put ant killer all the way around the post it is hanging on. I tried putting cooking oil on the hanger. Someone said that would work. It still gets ants in it. How does everyone else keep ants out of theirs?

Here is a link to a step-by-step instruction from eHow.com on how to keep ants off your hummingbird feeder. Second link is a page with 8 more tips from eHow users for other things that worked for them. Maybe something will work for you. Hope this helps! Good luck.

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