traders who operate a business that sends out salespeople, the production team use two arrangements of filming. The first operates on a similar principle as above, in which a house is rigged with hidden cameras and occupied by an elderly customer, portrayed by an actor. The customer will then call over a salesperson from the business to talk about a product, with the cameras recording what the salesperson does. A legal/commercial expert will usually comment on the techniques used by the salesperson, including "hard-selling", the price strategy used with the customer, and other behaviours that they should be adhering to or shouldn't be using. The second involves a member or members of the research team going undercover at the business being investigated on the pretense of seeking to work with them. These members are rigged with a hidden camera in their clothing to record the training they receive, and question the people working in the company on how they sell a product to customers. Services and Goods – These situations can vary, depending on what the trader is involved in, though the production team will usually send out researchers and actors to pose as customers, and will usually procure a trader's services/goods multiple times: If the trader is a mechanic or runs a garage, the mechanical expert recruited by the production team will usually set up a fault on a car, arranged for the researchers, that the trader or their garage must fix. After the car has been serviced, the expert examines it, to determine the quality of the work performed, how safe the car is, and whether it was value for money. If the trader sells goods, these will be bought and then examined by an expert to determine their quality and true value. For example, if the trader is a second-hand car dealer, the vehicle is purchased and then checked to see if it is roadworthy, has valid documentation, and is safe for the driver and passengers. If the trader is involved in rubbish collection, the production team rig the location of the job with an actor portraying the customer and a set of hidden cameras, while marking the rubbish to be collected with an identifiable substance and concealing a tracker amongst it. Once the rubbish is collected, the team follow the tracker from a discrete distance, until it stops moving for a reasonable period of time, and