Hi all,
Just browsing and came across this thread. Amdro Granules work well for brown ants, but you need to mix it with honey or something sweet for black ant control.
The absolute best two products on the market are Syngenta Advion Ant Gel and Antmaster Liquid Ant Bait (which you will need bait stations to put it in or put it in bottle caps). Get it from eBay (I'm in the industry and seriously the eBay prices are as good or better than I can get it).
It's not cheap but lasts for ever. Lay matchstick size lines of the Advion Ant Gel where the ants are active and it will kill the colony within 24 hours (each ant will die several hours after consuming it).
I always keep a tube spare in the van and in the kitchen at home. No sprays or toxic poison to worry about.\
For lawn ants outside at your home use Termidor Liquid. Same thing. Not cheap ($285 for 1L), but will last years and years and will save you tonnes of time from spraying time over and over again using that rubbish from the big green shed.
Thanks, just ordered a tube of Advion Gel.
I hope the little brown ants are attracted to it.