At a time subsequent to the issues originally stated, Social Services scheduled a home-check at OP's ex's residence. OP's ex and his parents were expected to submit to drug testing; however, they knew OP's ex's father would test positive for "smoking"...(pot? crack? I have no idea what-all people smoke these days)...and, therefore, pulled a no-show at said testing site to avoid what they believed to be OP's ex's father's inevitable arrest. OP would like to know the consequences for the subjects in question not showing up for the drug test.
Please don't judge me for understanding that.