Reminds me of an anecdote from my days working at a medical device manufacturer. The sales person was responsible for assessing hospital stock of the devices they sold as hospital personnel were too busy doing actual work to do so. The sales person would take inventory and leave a purchase order for the hospital to approve. Story goes that one (some?) of the sales people for a competitor (never us) would lift a ceiling tile and chuck inventory up there. "Oh, looks like you are running low on..."