My drain is not fom the kitchen sink, it is at the front of the house and is just rain water and dirt.it takes ages to soak away.what should i use? If you are looking for a fully qualified plumber, heating or electrical engineer you have come to the right place. It is below the dignity of my page to put a plumber on it, yet i have endured occasions! Monday to friday, am to pm (for non-household billing enquiries, please contact your retailer). Very good service throughout both technicians.