These mole traps are very satisfactory: I have asked 2 and the two worked the first day. One has fired at empty (maybe not correctly placed at the entrance of the gallery), and the second captured a mole (huge!) She had to be alone, because since I no longer have any molehill (it makes a week). What a relief not to discover every morning around ten new mounds on grass ...! Regarding the use, it is true that there is no manual, but I asked the seller about this, and he sent me an e-mail very explicit pictures that m ' allowed to reach these traps very easily. To advise all those who are tired of raking their lawns and fill holes every morning !!