WE ALWAYS HAVE TO CHECK OUR TRAPS IF YOU PUT THEM OUT ..YOU SHOULD ALWAYS CHECK THEM EVERY FEW DAYS OR SO ...THIS TIME WE DID NOT DO AS WELL W/ THE NEW DOG FOOD I WOULD HAVE THOUGHT THEY WOULD BE PACKED .... BUT THAT WAS NOT THE CASE..MAYBE NEXT WILL BE BETTER ? ON THE CALIF. DELTA