Answer:
Men seize me from my home tear apart my flesh drink the sweet blood then cast my skin aside.
I am a red drum which sound without being touched and grow silent when I am touched.
Open me, and you can't see me without a mirror. Close me and you can't see me at all. What am I?
I am the place to turn when nature calls.
What is full of holes but still holds water?
No matter how little or how much you use me, you change me every month.