The invention relates to an apparatus 1 for holding a piece of bait 2, in particular a piece of bait 2 for pests 14, preferably for rodents, comprising:a housing part 3 which has a receiving space 6 for receiving a piece of bait 2 and can be inserted into a part of a sewer system,a detecting device 9, equipped to detect a first item of information,an output device 11, equipped to output a first item of information detected by the detecting device 9.
