Where should I start?
Argintine ants have developed a "Global Super Colony" which is a term used by scientists (look it up to prove me wrong) which is a fancy and scientific way of saying WE'RE ALL GOING TO FREAKING DIE! In other words the Argintine ant has created massive amounts of colonies that have expanded all over the world via hiding on human ships and creating colonies on every continent that's not called antartica (which may not be safe as that's probably where the massive ant overlord sleeps, hence the word "ant" in its name), but while you're thinking "oh so what they're different colonies they'll attack eachother, right?" NO THEY WILL NOT! Basically they just say to eachother "look we're the same specieies let's be friends and have our swarms become one super swarm." To which the only reply according to observed behavior is "ok, but this time WE SWARM THE ZERG!".
Because of these massive colonies the Argintine ant has taken over parts of Australia where it has killed out species of ants that are 3-5 X their physical size on a scale of 1 Argintine ant vs 1 ant from freaking Australia. (Look it up it will horrify you) Oh and did I mention that they're killing species of lizards in California? You see they do this by killing more species of bigger ants (I wonder if there's a pattern here?) the native lizards can't eat as much food via ants....thus wiping out half of said lizard population. It's basically like having 2 pieces of toast replace every loaf of bread you'll ever have the chance of eating, aka you're going to freaking starve. And because of this everything that eats lizards is also dying out in one giant ball of ants are going to take over the world.
Next up we have proof that ants are trying to kill modern human technology, YAYYY! You see ants are attracted to electricity and/or electromagnetic fields and apparantly cause billions of dollars in damage to Britain's power grid each year. Because they apparantly see electricity as some sort of threat (threat to taking over the world) and thus they attack outside power stations etc no matter how many bodies get fried endlessly with electricity until they power station stops producing electric etc. and no I'm not saying they form a mega zord made with ants (that would be showing off too much), what they do do however is just go in an endless line of kamikazis that attack electricity. (Seriously look up "ants causing damage to britain's power grid")
Now for the last horrifying fact about Argintine ants, poison is like playing romantic music to them. You see, when sprayed with a stream of bug killer that's not infront of a lighter Argintine ants start reproducing even quicker and take the scent of attempted and failed killing them home and then start laying eggs and hatching etc quicker.
Next up we have more horrifying stuff.
Let's see, we've covered them attacking electricity, establishing super villain sized bases, eleminating other species, and how Argintine ants breed more when exposed to poison, what else is there? Oh yes, the fact that if they wanted to they could form mega zords the size of humanity and then kill us all in one giant wave of pants needing to be changed terror, because get this, pound for pound ants have equal or greater biomass than humans. Imagine yourself standing up, then imagine a super horrifying version of yourself opposite you, made out of a swarm of ants like a horror movie, then imagine this FOR EVERY HUMAN ON THE PLANET. That's just how big the ant biomass density is on Earth, so please tell me again why you think I'm crazy for planning to go into a bunker with a bug a salt and 50 tons of salt, water and explosives for the ant apocalypse that is bound to happen?
There is hope however in the form of something called beneficial Nematodes. There are two kinds of Nematodes, the kind that kills your plants and good insects in your garden, and the kind that goes all super nasty horror movie on ants and grubs etc. WARNING THE FOLLOWING SENTENCES ARE SOMEHOW SCARIER THAN THE PART ABOUT A CLONE OF EVERY HUMAN ON EARTH MADE OUT OF ANTS.
You see nematodes are the definition of scary horror movie parasite, but for insects, they basically enter something, say an ant through any opening it can get into ie the crevice of an ant's exosceleton and then once there they start to feed on the inside of said ant and lay eggs while the ant body swells up and starts doing things more slowly etc, then one day pop goes the nasty HOLY ARCEUS MY EYES! and the ant body that just exploded with nematodes goes and lays more eggs to feed on the remaining ant body while the rest search out new hosts to infest etc even via entering food that the ant is eating. FUN!