Question– “We own a cabin and have had it for about ten years now. In the last year we have started to have a bad sewer smell. It is worse this year than ever before. We have been offered advice about a dry trap, but we have run water everywhere and it still smells bad. Any advice?”
Answer– Since you didn’t say where the sewage smell is coming from our first suggestion would be to change your wax ring on your toilet and if this doesn’t work then you may have a cracked vent pipe. You can find a cracked vent pipe by doing a smoke test.