I do not know if this helps, but we have it written into our parenting plan that, whoever is living with the BM has to submit to a background check, in addition the BM and whoever lives there will be randomly tested for drugs and alcohol. My fiancee and the BM were never married nor involved in a relationship though, and there are some other circumstances that may have allowed that to be a part of our plan. We also have a private investigator that periodically checks up on her. But she also told the courts she lives at one address but really does not live there, just floats.
I hope that you are able to find a solution to your question, I know how frustrating it is being a part of something that you have no legal rights too.
I hope that you are able to find a solution to your question, I know how frustrating it is being a part of something that you have no legal rights too.