These are great! I have yet to discover any ants in my feeders since putting two up earlier in the season. Very beautiful to see above feeder, and sturdy hooks screw in easily. I have had no leaks or any problems. A recent guest at my home was very complimentary about the "classy" ant moats! Such a wonderful addition to my garden. No more ants or metal moats that rust, or plastic ones that look awful and don't do the job. A great gift idea for your hummingbird loving friends. Highly recommended. Sent in sturdy and safe packaging too.