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silicone has "strong resistance to action of biological factors"...at least according to http://www.wiley-vch.de/books/biopoly/pdf_v09/vol09_15.pdf http://www.w

• zoul 14y ago
  The tampons still have to be manufactured, individually wrapped and packaged, and delivered to the customer. Let’s say a single menstrual cup lasts five years and a woman has periods for 40 years. That’s 8 menstrual cups and a HUGE heap of tampons. I’d vote for the cup.
• obviouslygreen 14y ago
  zoul makes my point better than I did... the distribution and packaging costs and effects are definitely important. I also have a bit of unfounded reservation about assuming something that's touted as having been designed to be biodegradable actually is completely and totally so... it just does not seem likely to me.