First - NOT very good attempt...

... For many moons I've avoided attempts to focus stack; finally got a round tuit.  NOT brilliant I'll grant you; as much due to lack of light as ignorance.
I hung some Fly-catchers around and had, more or less, come to the conclusion it was a waste of time when - suddenly - one in the kitchen and one in the bathroom.  The daft thing is, my first, even less successful, attempt was of a fly which had, by some weird aerobatic antic managed to get securely stuck with both wings flat to the sticky surface and legs out into air.