Coax 'em out overnight with some dry dog food in another container that's
burnable. Toss the container in the bbq pit. Works with carpenter ants,
not sure about fire ants. Using "come and get it" dog food.

Normally, I use Amdro for fire ants. Never used it in a plant container
though. It kills 'em, just not right away.

Thanks, I'll go for the Amdro. Don't have a barbeque pit.