These are way smaller than the ones that swarm your arms. Those give off a smell when you crush 50 or so wiping them off. These are more than 1/2 time smaller. Here's a single grain of black pepper for size reference.What I always called sugar ants are a little bigger than those, I think. Sugar ants would sometime show up in the kitchen in extremely dry weather in other places I've lived. Around here I see the smallest ones anywhere a dead limb falls or if you leave a piece of lumber or a brick laying for a while. They will get all over you in a hurry moving limbs, but never had one bite.