Bests & Worsts Reviews from Amazon

I'm a little freaked out by a few things here. First of all, what is attracting all of these ants into my almond flour? They're not weevils, they're ants that also tried to access a sealed container of agave nectar without any luck. Second of all, how are they getting inside this package when it has never been opened? That's probably the part that bothers me most. And lastly, why did they die pretty much immediately? They weren't there yesterday, they got in overnight and already many of them are dead. All of these things make me question whether or not I should even purchase this again. It's in the trash now so that's money wasted, not likely to waste more if I'm going to have the same type of problems. Is there some type of pesticide or chemical in this that is killing the ants? I really want to know the answers to these things. I'm feeling really grossed out about it all.