What Futuristic Weapon Should You Use?

My bear fist. Poison, they will die a slow and pain full death.... Something that will make them puke! Use any normal weapon, preferable a rifle.

A factory. A laboratory. A waste treatment plant. At my home.

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Octopus Rattle Snake Stink Bug Wolly Mamoth

A nasty toxic, pile a of trash. Giant robots shooting at humans and bombs going off everywhere. More medical healthy and happier world. Same as it is now, just more advanced.