Every situation is different and there are some websites and/or lawyers that promote audio taping DCF when they come to your home. In reality, it is not something that I would generally recommend; as both in Massachusetts it is a state that requires all parties have to consent to a taping and it is extremely rare that DCF will agree to be either video or audio taped during an interview. Given the reality of the situation, it would make more sense in many cases, to first have an attorney present with you during the interview; if you are not able to afford or find an attorney then to have an advocate present during the interview to take notes.  If you cannot have an advocate, have at least a support network that can be there taking notes and keeping track of what is going on with DCF.  However, every case is obviously unique.