system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Just how exactly does Spider-Man ever defeat Sandman?

So I know this guy Sandman exists. I have a vague idea of what his powers are. And I know Spider-Man has fought him a lot. What I can't wrap my head around is, assuming my understanding of Sandman's physiology is correct, just how exactly does Spider-Man defeat him? And keep him defeated?

I'm thinking maybe trap him in an air tight container. But doesn't Sandman have to breath? He could heat him up and turn him into glass. But wouldn't that kill him?
gpt
Wet the sand, turn him to glass, suck him up in a vacuum, disperse him

In his buhjillion encounters with him, Spidey has figured out that Sandman actually has a "core" of a single grain of sand that he uses to control the rest. He's isolated that one grain of sand and problem solved.

And no he doesn't have to breathe.