im actually a manditory reporter for suspected child abuse, so i do know a little about the system. When you report a case you give the reasons why you suspect child abuse or neglect, who you suspect and an urgency rating (imidiate, with in a day, with in a week and i think there is one more). Other people will also report it (for instance in my case i would report it because of what i have either seen in the home or in treating the child and then the nurses and doctors might suspect because of a more thougher clincial assesment and also put in there complaints) and then the case workers will start an investigation.
Now in neglect cases this may well be that the solution is more finatial surport or a break away from the kids, or a house cleaner or pre prepared meals from an organisation like meals on wheels or a different house from the housing trust or symple for the house to be modifide
None of these would involve removal of the children because thats not in the childs best interests. Its the surport that is nessary not punishment