We've been having ant problems for a while, tiny little things, totally uninterested in any of the commercial baits we've tried. But they love my peanut butter. To try and keep them out of it, I set the kitchen bench legs in tubs of water. To our surprise, when I came to make my lunch sandwiches, the peanut butter container was surrounded by a ring of ants!!!!!!
So I've taken some pics of them in the hope somebody can identify them, and come up with a containment policy.

so they are roughly 2mm long, hard to get them sharp as it's low light and they keep moving.
This is the best image I have.

Next trick is to make our own bait out of borax and peanut butter, but we keep forgetting to buy the borax,