A device (1) for making an area (12) off-limits to a pet (2), includes a detection element (3, 10) for detecting the approach of a pet to the off-limits area and an element (5) for emitting at least one stimulus (6, 7) indicating to the pet that it is approaching the off-limits area (12). The detection element (3, 10) includes a first transceiver (3) worn by the pet (2), a second transceiver (10) located in the vicinity of the off-limits area (12) and at least one element (5) for emitting at least one stimulus (6, 7) and arranged in the vicinity of the off-limits area (12), wherein the second transceiver (10) is attached onto the stimulus emission element (5) and the emission of the stimulus (6, 7) is controlled by the first transceiver (3) worn by the pet (2) and activated by the second transceiver (10).