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? Travesía villa esther, · algete (madrid) ·. Always happy with the service we get from rowells you guys make everything so easy, and all of your employees are well informed, communicate well, and are professional & friendly thanks so much! Reliable industrial cleaning and drainage services. Used the whole bottle overnight to unblock a slow running.