“I needed a security guard for overnight protection of an estate sale being held at vacant property. I phoned five different companies/individuals and Keen Security Services was the only one that answered my inquiry. To their credit, they were able to provide an experienced security guard with only 2 days notice. Their current location is 1300 West Lodi Ave., suite A, in Lodi. Some sites show their former location. The owner was professional and pleasant with whom to work. I was very happy with their service and highly recommend them. ”