I'd bet it was Terro. The stuff is supurb for killing ants, but you can't buy it in original strength anymore. There's a Terro 2 I believe, but I've never tried it. When I heard the original was going to be banned, I stocked upand finally picked up a tiny little bottle of this fluid. It could have possibly of been that furic acid, but we put two little drops down on a piece of paper supplied with the bottle.
