Blocked Drains Expert Tips Preventing & Avoiding Costly Repairs. Blocked drains can be a major inconvenience and a financial burden. However, by taking proactive steps to prevent blockages, you can save yourself from the hassle and expenses associated with clogged drains. From simple DIY methods to regular maintenance and professional drain cleaning services, there are numerous ways to keep your drains clear and problem-free. The Plumbing & Electrical Doctor provides a large variety of plumbing services of the highest quality in Newcastle, The Hunter, Central Coast, and Canberra. We pride ourselves in delivering exceptional customer service and unparalleled workmanship.