Delivery and picture do not match

As already mentioned by some of the previous speakers, meet the mousetraps which are not shown in the photo. Instead of wooden "small plank" which you have to raise to clamp easily supplied traps are equipped with a sheet in which the rod is introduced to stretch the case.
In principle, though not really matter, in practice it has been found, however, that the bait disappears, the traps but not trip reliably. Apparently, the trigger mechanism is too stiff with the sheet.