Cleaning the snake cages
Before I got married, I used to keep a lot of stray turtles, snakes, and other reptiles I rescued from various situations. (Local police used to use me for reptile calls.)
I'm cleaning the cages on a Saturday morning, August, hot as the devil and no A.C. I'm shirtless, in shorts, with a 7' Black Rat snake named Oscar in one hand, and his lovely mate in the other.
A very persistant Jehovah's Witness knocked on the door for 5 minutes and ignored my shouted advice to either come on in or just go away.
So I went to the door, and there stood a very well dressed, polite, black woman with some of the brightest red lipstick (almost orange) I'd ever seen. (Don't know why I remember that so clearly, but I do.)
She looked very shocked, but stood her ground and started the sales pitch.
I asked to please hold Oscar (who was a very kind, gentle soul, unless of course you were a mouse or rat.) While I got my KJV Bible.
Things went downhill after that. Was not visited by the JW from that day on.
YMMV. But it worked for me.
Seriously, things were a bit less dangerous back then. Today, I always make sure I know what is on the other side of the door before opening it, and if it's not the local kids selling stuff for school or someone I know, the safety is 'off' and the chamber is loaded before I open the door.
I will open the door for strangers, I would rather take a chance on helping someone even if there is a small chance that it is a bad guy. If they set off my warning senses however, 'help' is in the form of offering to call the police for them.