Inpatient Drug Rehab

My sons father suffers from drug and alcohol addiction and I don't want my son around him until he gets help through an residential treatment center washington center. I fear that he will abuse my child or even worse while he is high. Drug and alcohol addiction I've heard makes people act violent, is this true? How can I make sure my ex gets help through an residential treatment center washington center and be sure he is actually cured from this horrible fate he has found himself in?

What can drug and alcohol treatment do for someone who is struggling from drug and alcohol problems? How many different types of drug and alcohol treatment are there for drug and alcohol problems and how can one be sure that the treatment they choose will be the right treatment? Is drug and alcohol problems harder for an addict to overcome than other kinds of drugs? Is drug and alcohol treatment available for all types of drug addiction in every treatment center or are there different centers for each type of abuse?