Answer:
A mighty weapon in the war against winged household pests.
Something wholly unreal, yet seems real to I. Think my friend, tell me where does it lie?
What can be heard and caught but never seen?
Die without me, never thank me. Walk right through me, never feel me. Always watching, never speaking. Always lurking, never seen.
Turn us on our backs and open up our stomachs you will be the wisest of men though at start a lummox.
What language does a billboard speak?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?