For ants that love my cats' dry food, I simply put down a few
crushed Wrigley's Breath Mints. The ants went away and have never
returned.
Then I put some outdoors, and the ants swarmed over them!!
Might be a different kind of ant. So had to resort to my old favorite,
sugar and boric acid. This always kills off insects, ants, roaches, don't
know about sliver fish that a friend was talking about recently. She will
try the boric acid with them.