We used kil block on the bathroom waste the result was amazinggreat product great value ! St porter call is an emergency / plumbing and drainage company serving southampton and the rest of southern england. I was skeptical about the baking soda and vinegar treatment the first time i read about it, but sure enough, it works! To help with any queries you may have about your quote we'll give you a courtesy call. So what should you expect from a home buyers cctv drainage survey ? Boiler.