Dominion 2L contains Imidacloprid which could indeed be harmful to honey bees. According to the Dominion 2L product label ,"This product is highly toxic to bees exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees are visiting the treatment area."
You may want to consider using ant bait in a bait station such as the Ant No More Bait Station which can be placed around the base of the infested trees. By placing the bait into the station you will be protecting it from the elements. Ant No More allows you to add two of your own favorite liquid, gel, or granular ant baits. The choice of two different baits ensures greater attraction for all kinds of ants.
We would recommend using Dominion 2L Termiticide Concentrate. This is labeled for use on trees, as well as around the perimeter of your home for ants. This is also labeled for other insects as well. Be sure to spray the area directly where the ants are. The mixing ratio is 0.6 fl. oz. per gallon of water.
We recommend that you consult with your local agricultural department to see what they recommend for use in livestock pastures for cutter ants. Dominion 2L Termiticide cannot be used in pastures for cutter ants and It does not look like there is much on the market for this use.