Topics: Using a snake to unblock a toilet; Battery back-up for a sump pump is not taking a charge – quality back-up systems; Should I drain the plumbing before leaving for Florida; What precautions to take against house plumbing freezing; Have an oil smell on the oil furnace start-up – have furnace inspected for dangerous cracks – you may need a combustion air duct; BIONEST super biologic septic system being used in Renovco’s lakeside mansion renovation; The kitchen drain is slow, will vent valves help?; Loud noise in the wall when the shower runs.