This is the large (16 ounce) HummZinger, the easiest-to-clean feeders in the world.  The bright red top snaps off to reveal the clear plastic base, complete with built-in 'ant moat' in the center.  Every part of the feeder can be reached easily for cleaning.  Brass hanger screws out for storage. 

Fill the feeder with fresh nectar, snap on the top, and fill the ant moat with water.  Ants crawl down the brass hanger but won't swim across the moat.

The flat spaceship shape allows hummers to feed from above - never a chance of spillage!