We've used Bulwark for over four years and have always been pleased with the service. We always get a "heads-up" phone call to let us know that they're coming. The technician always come to the door to see if we're having any problems. Our technician, Michael Davidson, is very courteous and does a thorough job. It's also great to know that we can call at any time between appointments if there is a problem and they come out without any additional charge.