To the extent necessary to ascertain compliance with the rules referred to in Article 1(2), competent authorities shall perform official controls on:
animals and goods at any stage of production, processing, distribution and use;
substances, materials or other objects which may influence the characteristics or health of animals and goods and their compliance with applicable requirements, at any stage of production, processing, distribution and use;
operators as regards activities, including the keeping of animals, equipment, means of transport, premises and other places under their control and their surroundings and on related documentation.