Dec 03, 2015 - 08:38 AM
Due to the EPA's strict requirements on many pesticides, there are practically no granules on the market that actually LEGAL and LABELED to be used in gardens and/or on food crops. However, I can tell you that almost all products sold for fire ants are commonly used in these areas because people don't read the labels.
Almost any product that is labeled to be used on Gardens, Vegetables, etc COULD be used in fire ant mounds. The question then becomes are Fire Ants on the label? Most of the time no, because the EPA charges money to the manufacturers to list each specific insect. From what I understand, different insects get charged different amounts of money due to different regulations and Fire Ants are very expensive because. That's why most Fire Ant Baits are fire ant specific, but they don't include gardens, for lots of other reasons.
Most of these products legal for use in gardens for fire ants are going to be sprays and dusts. Dusts are not going to work as well as a spray. A concentrated spray such as can be mixed in a bucket and the fire ant mound can then be drenched to kill them. Basically mix about 1 oz per gallon of water and drench the mound with a couple of gallons of mix.
The organic way is to use the KM Ant Pro System, which utilizes a liquid bait in a dispenser. The liquid bait never touches the vegetables and is completely safe for the environment. Lots of organic growers use this system, and it also works well around homes for most species of ants.
There isn't any easy way to do this. Sorry for the long explanation. Hope this helps.