Answer:
A mighty weapon in the war against winged household pests.
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
A house with two occupants, sometimes one, rarely three. Break the walls, eat the boarders, then throw away me.
What can be heard and caught but never seen?
When does Christmas come before Thanksgiving?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.