Answer:
I drive men mad for love of me. Easily beaten, never free.
A mighty weapon in the war against winged household pests.
What is the freedom of birds and the pen of old men?
When it comes in, From sea to shore, Twenty paces you'll see, No less, no more.
A serpent swam in a silver urn, A golden bird did in its mouth abide, The serpent drank the water, this in turn, Killed the serpent. Then the gold bird died.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?