Disassemble the Squirrel Buster Plus. Refer to the instructions including with the feeder, or follow the link in the Resource section for specific disassembling instructions.
Fill a bucket with warm water. Add a couple squirts of dish detergent. Use your hands to mix up the soap and water. Fill another bucket with white vinegar.
Scrub each component of the feeder with a rag and the soapy water. Dip each component into the bucket of vinegar to rinse and disinfect.
Dry the parts with a clean rag, then lay them on a clean towel to air dry the rest of the way.