It all depends on how far away the well or cistern is away from the property. Here is the verbiage off of the instruction label for Dominion:
TREATMENT AROUND WELLS OR CISTERNS: Do not contaminate wells or cisterns.
Structures With Wells/Cisterns Inside Foundations: Structures that contain wells or cisterns within the foundation of a structure can only be treated using the following techniques:
1. Do not apply within 5 feet of any well or cistern by rodding and/or trenching or by the backfill method. Treat soil between 5 and 10 feet from the well or cistern by the backfill method only. Treatment of soil adjacent to water pipes within 3 feet of grade should only be done by the backfill method.
a) Trench and remove soil to be treated onto heavy plastic sheeting or similar material or into a wheelbarrow.
b) Treat the soil at the rate of 4 gallons of solution per 10 linear feet per foot of depth of the trench, or 1 gallon per 1.0 cubic feet of soil. Mix thoroughly into the soil taking care to contain the liquid and prevent runoff or spillage.
c) After the treated soil has absorbed the solution, replace the soil into the trench.
Structures With Adjacent Wells/Cisterns and/or Other Water Bodies: Applicators must inspect all structures with nearby water sources such as wells, cisterns, surface ponds, streams, and other bodies of water and evaluate, at a minimum, the treatment recommendations listed below prior to making an application.
1. Prior to treatment, if feasible, expose the water pipes) coming from the well to the structure, if the pipes) enter the structure within 3 feet of grade.
2. Prior to treatment applicators are advised to take precautions to limit the risk of applying the termiticide into subsurface drains that could empty into any bodies of water. These precautions include evaluating whether application of the termiticide to the top of the footer may result in contamination of the subsurface drain. Factors such as depth to the drain system and soil type and degree of compaction should be taken into account in determining the depth of treatment.
3. When appropriate (i.e., on the water side of the structure), the treated backfill technique (described above) can also be used to minimize off-site movement of termiticide.
You need to get the Dominion into the ground, so you would typically want to drill holes in the tree stump, and around the tree stump into the ground, and then inject the Dominion inside any holes. It will touch the termites that are inside and underneath the stump and eliminate them completely.
Dominion or Termidor could be used in the trench around the house and would be great to do so. Termidor would last longer in the soil, 10 years or more whereas Dominion is about 5-7 years.
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.
Each product is formulated differently and the actual application rates are different so the instructions on each product are specific for that specific product. Here are the measuring instructions that should be followed for Dominion 2L:
How to find the DBH or Diameter at Breast Height of a tree
1. To find the diameter of the tree, measure the circumference of the tree four feet from the ground. Use your tape measure to get accurate measurements from the ground to the four-foot mark and around the tree.
The circumference of my tree is _____________________
2. Calculate the diameter of your tree:
_________________ ÷ pi (3.14) = _____________________
circumference diameter (include units)
Note: For multi-stem trees, such as crape myrtle or birches, the rate should be determined on cumulative stem diameter for all stems in the clump.
You can use Dominion 2L insecticide to treat scale on your crepe myrtle trees. You would apply this as a drench around the root system of each tree while the trees are actively growing. This is typically done in spring after petal fall. You would use 0.1 – 0.4 oz of Dominion 2L per inch of trunk diameter at breast height diluted in water in a bucket or watering can and poured around the base of each tree. We generally recommend that you pair a soil drench with a topical spray such as a horticultural oil or a pyrethroid such as Talstar P for fastest results when treating for scale.