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? Now available through energysmart. Caring, reliable, affordable service - even on the th of july! We will apply for the grant on your behalf and discount it from upfront price this means you do not need to wait weeks to be reimbursed following the install. Do plumbers offer a written warranty? The easiest way.