Blocked Drains Outside House : Why You Should Clean Your Underground Gutter Drains and Downspouts : If you’re at all in doubt, call a professional plumber or drainage expert who will have the tools to unblock the drain quickly and efficiently.

How to unclog an outside drain Diy fix there are steps you can take to fix an external blocked drain yourself, as long as it's a fairly minor issue and it's not a shared drain. …