Help! Leaf Cutter Ants

I suppose I should clarify for those who didn't follow my previous thread...

I am in Cozumel, so any solutions you may have for me need to be available in a small tourist community on an island in Mexico... And most of our water is from the wells on the property, so I want to avoid anything toxic that may seep into my well water if at all possible.

Barriers are not going to be effective as there is too much vegetation here for me to protect, it simply is not practical. I need to kill the colony.

NAPALM!

Did you really expect to move down here and not deal with insects? Man good luck on your new full time job of battling every creepy crawler you can imagine, and some you cant. Here in Tabasco I have tried to limit my recourse to the ones that sting me or make me itch, the plants quickly grow back in a tropical climate so I save my ammunition.

Possibly just a Borax border around your place, forget the sugar. Or..... buy an Anteater or two .

I knew I would have fun with the creepies and the crawlies down here, so far I've managed to maintain a sort of non-aggression pact with most of the ants, but the leaf cutters and the ants I've had in the bird enclosure here need dealing with... I am caretaking a Bed and Breakfast for the summer, and would prefer not to turn over a half eaten garden when the owners return... Though apparently their last leaf cutter infestation took something like 7 years to eradicate... so if I'm gonna lose at least I only have to make it till November, but I'm not going out without a fight.

Ha ha ha, well good luck! Prety cool summer deal you have