The original homemade ant bait that Reddit keeps recommending year after year. Mix borax with sugar and water (or honey) for a cheap, effective colony killer using the same active ingredient as Terro.
If you want to skip the store entirely, this works — borax is the same active ingredient in Terro, and you can make a huge batch for pennies.
“Borax, sugar and a lil bit of water. They'll swarm it.”
