Seattle, we have a problem with grease in our sewer pipelining! In order to save your sewer pipelining be sure to not pour grease down the drain. It is not an old wives tale, grease can clog and ruin your sewer pipelining and lead to busted sewer pipes that can flood your home! Seattle, if you are concerned about a clog or have a leak, please call Perma-Liner at 866-336-2568 or visit our website at www.perma-liner.com.