Where do they go?

Our used tampons/sanitary napkins. After throwing it in the proper bin in women's toilet stalls. Where do they go? Do they incinerate them? Or send them to Transylvania for the Count to devour?Where do they go?
the ones where I work go into the garbage at the end of the day. We only use those boxes as a warning to the cleaners. they know whats in their so they can protect themselves. If we threw em in the big can it'd be like "SURPRISE!" haha, ew.
eugh.....
that is grose, funny, but grose....
Something magical happens and they turn into little red dwarves that occationally steal our car keys and hide them in our right sock in a drawer that we haven't opened in years.
ever since HIV/Aids got to be bIg stuff.. most commercial cleaning services have the red bio-hazard bags. Then they are tape sealed and disposed of.
they go to the big garbage can in the end of the world :D