one thing about bleach, if you mix it with a sodium based cleaning product it will cause a violent reaction producing hydrogen peroxide gas that kills instantly.
I don't believe it kills instantly, but it is toxic.
you could take bleach, sodium based cleaner in 2 seperate thin glass containers, cotton wool attached to a nail that is set to penetrate a superglue bottle... when the concoction mix.... hydrogen gas bomb??
maybe?... few nails in there....
the super glue thing is like a smouldering. so no really but throw that shit in an enclosed space and it'll fuck someone up.