They have been very clever in how they replace fine decorative pieces with cheap plastic items or replace framed wall art with cardboard yard sale trash. As a result we don't often notice it missing until they are long gone. With the constant stream of aids in and out of the house it is difficult to know who has stolen things. We have switched agencies once and, in interviewing the Directors of alternate services, they openly admit that this will happen and the only recourse is to install "Nanny cams". Does anyone have any suggestions?