I have a Styrofoam top feeder from betterbee, the main problem people have with the top feeders is when they put them on they tend to fill them up with syrup, the best way to manage a top feeder and to keep it clean is not to put to much syrup in the feeder at one time if you can check it ever few days, I know some have hive not close to their home and tend to fill them up, just because it can hold 3 gallons doesn't mean you have to put 3 gallons in it, on my feeders I only put about a quart at a time, easier to work with, and about the ants, top feeders do tend to attract ants, I spray the bottom cinder blocks with ant poison on all my hives, I know it can kill my bee's but these fire ants can move in fast, I haven't had a problem yet, my hives are 2 cinder-blocks high and 4x4's on that....