Ewwwww that smell can you smell that smell?? So, % of the time, there’s no need to turn off the mains water. It works i used product in bathtub where water was running out slow water is flowing freely again! Buyers are often left in the dark about the condition of drains which are often out of sight, out of mind and can often be in a very poor condition. Puppers | stack brewing - only place in town! Recommendation: joining the plumbing-heating-cooling contractors.