2 of Grandpa's Best HandCrafted Copper Ant Trap Guard Moat 4 Hummingbird Feeders Ant Guards. Hummingbird or Fruit Feeders with those Pesky Ants. STOP THEM IN THEIR TRACKS This handmade, pure copper 3/4 inch cup with 10 gauge copper wire. Ant moat stops them in their tracks , without chemicals. to keep ants off your bird feeders. Hang any nectar, fruit feeder from bottom hook. Add 2 or 3 drops of vegetable oil to the cup swirl oil to coat inside of cup and dump out excess. Measures approx.4" tall and 1" wide. The Ants can not cross the oil barrier. and it doesn't evaporate. The pictured moat is for your inspection. all will be very very similar but they are hand made so no two will be exactly alike.