Big bell, no help

Okay so we got collars on the furballs to give the "prey" in the neighborhood a fighting chance, but I guess it's not much of one. It's been less than one week and this morning we came downstairs to find Smoke with a "chirping" mouse in the house, then tonight we caught him outside playing a game with a mousie from the field on the front lawn. So much for the loud bell... I guess no one is safe from the furballs!