Less than 5 minutes after I hung it up the hummingbirds were already at it and spent the day feeding off and on. They really like the perch! They stay longer when they can perch.
The wasps also found it but they could not get inside of it. They crawled around then left. If you spill ANY sugar water on the outside of the feeder, it will attract wasps no matter what, so try your best to not spill any on the outside of the feeder. The opening is wide enough that this shouldn't be an issue. It also doesn't leak whatsoever so that's not an issue either.
The ants also found the feeder, they crawled down the rope but the moment they hit the water in the moat they went right back up. So I changed the rope to fishing line and now they cannot get to it at all because ants can't climb fishing line.
Problem now solved and now the hummingbirds can feed in peace and the contents of the feeder will not be contaminated by insects.
I highly recommend this feeder! Hang it with fishing line and don't get any sugar water outside of the feeder and there should be no issues. They definitely cannot get inside of it whatsoever which is the point of being bee and ant proof - they can't get INSIDE of it. It's leak proof, sturdy, and easy to clean. I love it.
Win-win!