After brushing and flossing last night, I stared at the waxy piece of string in my hand.

What do I do with this?  I should be able to throw this in the compost, right?

After a little web research I found out that the dental floss that was doing so much to keep my teeth healthy and strong is not biodegradable.  In fact, the floss that I had in my hand is made with polytetrafluoroethylene (PTFE), also known as Teflon.

Since I bought the floss in bulk at Costco months ago, I still have seven unused containers in my bathroom closet, each filled with something like 45 yards of floss. If I buy new, biodegradable floss, the floss I have will most likely get tossed if donated.  Perhaps I can use the Teflon floss in a future art project?  I will have to ponder this one further…