Since the courts are unable to monitor the activities of each parent on a day to day basis, it has become more common for parents and attorneys to hire the expertise of a child custody investigator to gather the evidence needed to win your case.
These activities could be the day to day relationship between the parent and child. Is the parent spending time with the child or just pawning them off on relatives or others? Are there signs of any physical, mental abuse or neglect? Other factors include drug and alcohol abuse by the parent when the child is in their custody. Cohabitation can become an issue after a final divorce has been obtained, however the parent has not remarried and is having a new live-in lover living at the domicile while the child is present.