Regular and conventional floss may not work for you so here is another option.
PLANT BASED MATERIALS : floss picks are made with plant based PLA (Polylactic Acid), derived from Corn, Cassava and Beets.
*PLA may be composted in Industrial Composting, bring it back to Refill if you do not have access.
*Important to point out here that vegan floss usually contains plastic and this is why it is not fully compostable so please cut / remove before tossing in the compost bin.