How do i open the drain out bathroom bottle? Fund supermarkets: compare customer satisfaction. Brilliant news, thanks everyone! We are affordable and highly professional, as our technicians have years of industry experience and are also equipped with the best tools in the market. 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? English boiler has constructed complete.