So, there you have it; all the tips you need to ensure a clean, fresh and dirt-free drain remember: if the problem’s getting out of hand and your drains are continually blocked, make sure you act fast leaving the problem to build up will only result in a drain that’s even harder to unblock. Get the job done with a choice of thousands of endorsed which? trusted traders. If the blockage is so severe that it requires a dig down please. Homeowners often.