Dominion 2L Termiticide is applied at 0.1 to 0.2 fl oz per inch of trunk diameter for trees at the base of the tree inside the drip line. Apply uniformly around the base of the tree in no less than 10 gallons of water per 1000 square feet. Direct application to the root area. Even if the trees are close, as long as you are applying the correct rate per the diameter of each tree, with enough water, that is what matters. Please read the product label for complete application instructions.
Dominion 2L Termiticide does kill ants but the product label doesn't list cutter ants. The product is specifically designed to be a non-repellent which means the ants will not be able to tell that it is there and will readily walk through treated areas. The product is also designed to have a delayed reaction kill which allows the ants to get back to the colony and spread the insecticide to the other ants before they start to feel the effect of the product. You should see the full effect of using Dominion 2L within 1-3 weeks when you are using as recommended on the product label. The mixing rate is .6 fl oz Dominion to 1 gallon water.