Undercover investigators are one state’s new method of reviewing questionable facilities, according to the AARP Bulletin.

New Mexico has begun training investigators to pose as new residents in certain facilities and give a firsthand account of their treatment. The investigators then pass notes to their “visitors,” accomplices trained to collect the reports, the Bulletin says.

One of the three facilities investigated so far has been closed, and the state is working to put more monitors in the facilities. Some administrators and workers have complained that the investigators are biased and come to the homes with an agenda. However, the state plans to continue the operations, according to the AARP.