MY HOUSE WAS BUILT IN 1960, THIS YEAR I STARTED TO HEAR FLUSHING SOUNDS AT ANY TIME DURING THE DAY OR NIGHT. I CHECKED ALL OF THE BATHROOM TOILETS IN MY HOUSE BECAUSE I WAS THINKING THAT THE TOILETS WAS RUNNING IN MY HOME. IT SOUNDS LIKE IT IS COMING FROM MY NEXT DOOR NEIGHBOR HOUSE AND I BELIEVE THAT EVERY TIME SOMEONE IN THEIR HOUSE GOES TO USE THE BATHROOM I HEAR FLUSHING SOUNDS. CAN YOU HELP IN THIS PROBLEM. :confused