There appears to be an infestation of some sort of bug coming out from the baseboard in the wall directly behind the boys' food and water bowls. The bugs are so small, at first we thought they were pieces of dust or litter, but when we saw them moving, we knew they were alive. It looks like, based on pictures I've seen on the Internet, they could be firebrats or silverfish.
We sprayed some Poison-Free Ant and Roach Killer around the baseboard two days ago and we hadn't seen any since then, but I vacuumed near the baseboard this evening and a whole bunch of little bugs were little sucked out, some still squirming (yech!).
I live in an apartment, but I'm a little reticent about having the building management call their exterminator, because he sprays toxic stuff that the boys could end up ingesting. I don't care to bait these things, b/c really my main goal is just to keep them away from my apartment. If my neighbors get them, well . . . they need to do the same thing.