I had a lot of medium sized ants coming in to help the
cats eat their dry food. Someone on the Internet said to
use white breath mints. I put some around the cat food
tray, had to chop them up because Koko (my rescue half
Siamese) had WAY too much fun batting them around the
kitchen floor.
Never saw another ant in the house since, and that was last
fall. I thought if they worked so good in the house they would
do as well outdoors, but those must be from another group,
they absolutely LOVED those breath mints. So had to go
back to the old faithful..Boric Acid and sugar. That will get
the ants and any roaches that come from the neighbor's big
dogs where they dump a lot of used up food and then it is
rarely cleaned up........