Abstract: A premises (20) is equipped with a plurality of containers (26) in which are stored bulk products (56) that are dispensed from the containers (26) for individual transactions. The containers (26) are equipped with asset tags (48) that monitor the dispensation of products (56). Event records (96) are electronically communicated from the asset tags (48) to a host (46) for processing. A tag event process (198) evaluates the event records (96) and calculates actual dispensation rates (224) that self-calibrate for a number of potential dispensation variances. The tag event process (198) detects when a container (26) becomes empty (68) and then performs a reconciliation (266) for the container (26). The process (198) also detects when inventory usage data is incomplete, whether by failure to receive communications or from missing a single event record (96), and causes a warning to be presented so that an audit may be performed.