The top mystery shopping companies are unique in that their services involve sending out well trained personnel to act like standard employees in your store. The mystery shopper agency will have a series of questions that will be gently asked to your employees in a way to possibly get them frustrated so that their reaction can be evaluated. The top mystery shopping companies are effective in finding out those that may be hindering business a bit and also for finding your workers that are excelling at a top level. The latter can be used to provide them with an unforeseen bonus or something at the end of the year to express your thanks for quality service. However, the employees with negative ratings can be dealt with as soon as you feel the need to so that more customers will not be deterred. Grocery stores usually use the top mystery shopping companies as people are constantly in need of food and other provisions in everyday life. There are a number of departments within a store that all have different personnel working to service customers all day long. The mystery shopper will appear to be just like the average person and therefore your employees will have no idea he or she is even there. This is very helpful in determining which people need a talking to and which should be commended for their constant hard work ethic and customer satisfaction ratings from time to time.