// An invasion is a large influx - and that's what's happening. //
From another perspective, consider this:
Lots of ants INVADE your kitchen. They mean you know harm, they're just doing what ants do.
Pound to a penny though, you'll either exterminate them or find another method to repel them.
Either way, you clearly don't want them in your kitchen. Does it not become apparent then, the term 'invasion', falls somewhat into the category of incendiary language?