As soon as possible, preferably in the planning stages, but as shortly after conception as is reasonable, and certainly not later than the birth of the child, a Parental Helper will be assigned for each adult (one for Dad, one for Mom, and if Grandma is in the house, she'll get one too) that will be living in the household (household accomodations will be discussed later) with the child. This Parental Helper is there to assure that the home environment is not only safe and clean, but that all of the child's needs are met as well (from the basics such as food, clothing and shelter to the less obvious, but no less necessary, cuddles and kisses).
This Parental Helper will be trained in a wide variety of areas such as: housekeeping and organization, basic knowledge of psychiatric illnesses and their treatments (she or he will not be responsible for diagnosis, but will be aware of potential warning signs), and a variety of alternative parenting techniques.
The Parental Helper is just that. She or he is not there to pass judgement on the skill or lack therein of a parent or other responsible adult, but too assure that the child is cared for and the household will run smoothly after he or she leaves.
That being said, the Parental Helper's responsibility is first and foremost with the child. If alcohol or drugs are starting to become a problem, the Parental Helper would be well within her rights to dispose of the problem substances in any way he or she deems fit (within the realms of reason of course, Parental Helpers aren't going to set the house on fire just to dispose of a bottle of booze). He or she may also demand an on-the-spot drug or alcohol test if he or she deems it necessary.
Non-compliance to the on-the-spot drug or alcohol test is considered failing the test. Failure will mean that the person who did not pass the test will be required to leave the home until an acceptable measure of sobriety is reached. Repeated and chronic failures fall under the category of "druggies and alcoholics", ergo, they will be killed. Yes, it sucks, but running the world does have its parts that won't be easy.
Refusing to leave the home when requested to by the Parental Helper will be considered a request to no longer live in a home where a child is present. In other words, if you're drunk or stoned, you have have the choice to leave the home either temporarily or permanently.
Note: temporarily leaving the home is equivelant to a 3 block radius from wherever the child may be at during the specific moment. This is assuming the irresponsible adult and the child can not see one another. Out in the country, the radius may be wider.
There's more to this topic, but I'm interested in hearing what other folks think about "Parental Helpers" as a concept.