Ant update: the peanut butter bait is a smashing success. Hopefully there is enough borax mixed in that I am actually doing something beyond creating a pet ant colony.
Meanwhile, the husband pointed out that I am (hopefully) temporarily making lots of ants very happy. At which point he got a pointed reminder not to humanize the ants for me or I will feel very bad about what I am doing, even though the next step I am tempted by involves a flamethrower.
…mostly joking about that last bit. But only mostly.