We clean your pipes, not your pocket! Are tree roots blocking your pipes? we have the right equipment and expertise to have them removed with minimal disruption to your garden. The results are presented in a clear and printable format, for ease of viewing. I would have thought if the continuity checks out on the gas valve, the engineer then tested the pcb? The baking soda and vinegar works, the vinegar reacts with the baking soda forcing it to expand and break the clog.