I'm not really sure where to put this, but this looks like a good folder.
We have ants. I have torn apart our foodstuffs, and they don't appear to be into anything like that. But the second food gets dropped on the floor, they SWARM.
I have become fanatical about keeping the floors clean since last year when we discovered we had a mouse. Not that we were slobs before, but now the floor gets a wipe-down at least once a day, usually once after each meal (our younger child is VERY enthusiastic about food, which results in some of it going on the floor, even though she's finally learned not to drop food intentionally).
The counters stay clean, and when I cook, I also clean up the floor. There is literally nothing for them to be living on except in the few minutes between the first crumb from a meal hitting the floor and the end of the meal, when I wipe it all up.
I think they're either living under our kitchen counter (our dining table is pushed right up to the counter; the kitchen is open to the living area), or they're coming through the wall from our neighbors' garage (it's right up next to ours, and I never see any ants in our own garage). I've put down traps in the very limited number of places that are safe from toddler hands and likely to be found by ants, but they don't appear to be doing any good.
Can anyone suggest anything? I hesitate to go to the apartment office because I have this paranoid fear of being seen as dirty. This is totally irrational, I know; I'm not Martha Stewart, but I'm ultra-paranoid about keeping things clean that have even the slightest possibility of attracting pests. So far, the ants aren't actually hurting us or contaminating our food. But it really gives me the willies to look down and see a piece of apple dropped seconds before just covered in tiny ants. Brrr.