Very well built and sturdy but so far, after a month of trying, no moles.  Located in Florida the soil is extremely sandy and loose so when we try to retain any semblance of a tunnel it's just a pile of sand.  Not sure if there's any secrets to using these in sandy soil but we have stepped down tracks, found rebuilt and pushed part down and had it get pushed back up.  Then we have set the traps, waited and waited, and don't get a thing.... except more mole damage all around.  You disturb the track at all and it all just collapses down.  Any hints would be GREATLY appreciated.  If we could eliminate some of our moles, or even figure out how to get just ONE, then we'd be pushing the star rating waaaay up.