IT is not that the feeder container itself is cloudy, but if the solution gets cloudy. That usually indicates mold or that the solution is going bad. I can't imagine that the feeder container being cloudy would have any effect. They aren't attracted to the sight of the liquid, but red on the feeder.

BN

I would try a little vinegar or bleach and rinse it out well. If that doesnt take it off, I would get another feeder.

The feeder itself being cloudy doesn't bother my hummers at all.

That's very interesting. I have another feeder question and wanted some feed back on this idea. I have a typical glass feeder with the four stations and yellow wasp guards. When I get any kind of wind, the feeder drips. I was thinking of putting a small drop of glue at the tip of each feeder, on the lower rim, to narrow the hole, so that the dripping will stop. The wasps are having a picnic and I thought this would change the height of the nectar. I don't want to poison the hummers or make the opening too narrow that it creates a problem. What do you pros think of this idea?

dominidan, If the opening in your glass feeder is around 1" in diameter, you can lower the nectar level by inserting a tight fitting plastic tube and trimming it so it protrudes anywhere from 1/8" to 3/8", depending on how much you want to lower the level.

Thank you so much for answering, ctnchpr. The hummers haven't arrived yet and I figure I have time to play around with this feeder. I tried narrowing the smaller holes, where the flowers attach, with non toxic glue. It was still dripping a bit. Nice to talk to the professionals. Thanks again.
dan