This is a suggestion on controlling ants approaching hummingbird feeders.
You will need:
2 cup hooks
Screw one cup hook through the bottom of plastic cup into the cork bottom. Screw 2nd cup hook
into the top of the cork. Fill with water then you can hang the moat from a tree branch or “S” hook. Now you can
hang the hummingbird feeder from the bottom cup hook. (see the diagram)
Keep water in the reservoir of the plastic cup. You will need to refill when needed. Ants are clever
and can find their way to the sugar water solution if the moat runs dry.
You can find the plastic cups from a variety of sources. Laundry soap cups are one good sturdy source.