The best thing to do is to take a break from the correction collar anytime there are signs of soreness.
This will help the dog understand that they are not in trouble and that care is given to their general well-being.
The owner may have to revert to a traditional leash and tether system to contain their dog within the yard.
It is recommended to regularly check under the fur for protrusion marks caused by the contact probes or rope-burn-like marks that could be caused by a tight collar.
These sores will need to be washed regularly with a damp cloth, and the pet should be given lots of belly rubs and treats to remind them that they are very loved.