Step 2 · Clean and Prepare Existing Flange
With the toilet removed, use a putty knife to scrape all of the old wax from the toilet flange. Be thorough and remove any debris, old bolt fragments, or residue from the flange and the surrounding floor. A clean surface is absolutely essential for the new extender to seal properly. Use rags, possibly with a degreaser or mineral spirits, to wipe the flange completely clean.