I squirt oil on, and wipe it off with Kleenex, but wiping it off also spreads it around.
For tight spots, I use Q tips, but I hate the fibers it leaves behind for CSI.
The word 'forum" does not mean "not criticizing books."
"Ad hominem fallacy" is not the same as point by point criticism of books. If you bought the book, and believe it all, it may FEEL like an ad hominem attack, but you might strive to accept other points of view may exist.
Are we a nation of competing ideas, or a nation of forced conformity of thought?