One part sugar to four parts water should be boiled to dissolve the sugar and to sterilize the water.  Carefully fill your feeders and store the unused portion in the refrigerator to use within a week or so.  Do not use any colorants, they are not needed.

Keep the solution in your feeder fresh and replace when it gets cloudy about once a week or more if needed .  The feeder is best when not in full sun so the solution does not heat up.

Keep your feeders clean and filled once you begin feeding so they make your home a regular stop.