This one seems like common sense, but I have seen many people do the opposite.
This is spray fragrance - often used in the bathroom. A few years ago I wondered, "Why do people spray all over the airspace? That's not where the smell is coming from."
I tried spraying a couple of shots, or even just one, right in the toilet. Worked like a charm!
"When I think of Mick Jagger still singing that he can't get any satisfaction in over forty years of being in the Rolling Stones, I have to conclude that he's either lying or not all that bright." -- Henry Rollins