Extinguish Plus Fire Ant Bait would be a good choice for you. Extinguish Plus can be used on pasture land and there are no grazing restrictions for companion animals. Below you will see the grazing info available on the Extinguish Plus product label. Extinguish Plus combines the power of hydramethylnon with an insect growth regulator (IGR) to kill fire ant workers and prevent queens from laying fertile eggs. The result is complete fire ant colony control. Extinguish Plus Fire Ant Bait is best used in the spring or early fall, or whenever fire ants are active. The ants will feed off Extinuish Plus and spread the bait throughout the entire colony, halting the infestation within weeks. Extinguish Fire Ant Bait can be used indoors and outdoors on lawns, pasture land, rangeland, landscaped areas, and golf courses.
EXTINGUISH PLUS may be applied to grass forage
(pastures and rangeland) for the control of fire ants
only in the following states: Alabama, Arkansas,
Florida, Georgia, Louisiana, Mississippi, New
Mexico, North Carolina, Oklahoma, South Carolina,
Tennessee, Texas, and Virginia. Use on grass forage
(pastures and rangeland) in states other than those
listed is unlawful. See Outdoor Use table for
application directions. Do not exceed 8 pounds per
acre per year or more than 4 times a year, with a
minimum re-treatment interval of 90 days. Do not bale
and cut treated pastures and rangelands for 7 days
following application. These cutting and baling hay
restrictions for pasture and rangeland do not apply
when the treated pasture and rangeland is used solely
to support COMPANION ANIMALS (e.g., horses,
llamas, etc.). Companion animals grazed on treated
areas cannot be used for food or feed. EXTINGUISH®
PLUS may be used on uncultivated, agricultural, nonfood
crop and non-agricultural land.
No, Extinguish Plus Fire Ant Bait Granules are a very safe solution to fire ants. When you apply this product, you normally would broadcast it over your lawn in such a small amount there would not be enough of it in one place for your pet to consume. This product is only strong enough to kill a very small ant. Of course (like any other product), you would want to make sure that you keep the opened bag of granules in a safe place where the pet could not get into the open bag.
Extinguish Plus Fire Ant Bait should be used within 3 months of opening the bag.
It is recommended to broadcast the treatment of Extinguish Plus Fire Ant Bait instead of mound treat for best results. This is because fire ants do not always come out from the mound area but instead have tunnels coming out 10 feet or more away from the mound. Extinguish Plus is one of the most effective fire ant baits on the market and most folks see results within just a few days but it can take longer depending on the size of the colony. Also, Extinguish will not prevent any new colonies from moving in so treatments should be done as needed following the instructions on the product label. There are also some great tips here.
When using Extinguish Plus, it can can take 4 to 7 days to start seeing results. Keep in mind that you should only apply this product if the soil temperature is above 65 degrees, it is not going to rain within 8 hours, and the fire ants are foraging. It is recommended to broadcast the treatment instead of mound treat for best results.
Extinguish Plus Fire Ant Bait is labeled to apply indoors only in cracks and crevices and/or inaccessible areas. These would include the void underneath your cabinets, underneath and behind appliances, inside wall voids, water heater closets, etc. You would not want to place this bait inside a cabinet with plates and silverware or on any food handling surface.
No, Extinguish Plus Fire Ant Bait will not harm earthworms.