These parts will come in contact with hot gummy candy, which at its hottest is never more than 200 degrees F. The candy is even cooler by the time it's in the mold and you are jabbing at it with the tiny picks-- we don't think this contact poses any health risk to the tasters of the candy, but we'd rather print in PLA than ABS to play it safe. Wash the parts with room temperature water and dish soap in a strainer before use.
As with all Adafruit projects, this project is conducted at your own risk!