While these little guys look simple, they function perfectly! Never before have I seen such hardcore suction cups you have to screw in to work! So cool! I was suspicious about how well they would hold up with water and nectar in it, but they've securely stayed in place for weeks.
The nectar reservoir is mercifully covered so bees and flies don't land in it and swarm your windows (though, they do fly by from time to time) and it is surrounded by an ant moat that is a reasonable depth, so you don't have to refill them too often or worry about them at all!
Best of all? When it's time to clean the reservoir out, all you need to do is lift it out - no suction battles necessary whatsoever (unless you wish to clean out debris in the reservoir- you can likely do that with a cotton ball, though). All and all, super satisfied with this purchase. Great bargain for two extra feeder locations!
