Not everyone is a plumber. There is always do it yourself solutions available online. Simple search and you can find numerous solutions. Question is will it really help or worsen the situation. When you're faced with a nasty situation better call experts. Experience tops DIY solutions. The blockage can occur in different places, domestic or locally - within the neighbourhood. Locating the issue is one of the first steps an experienced plumber from Best Drainage Services will do. Once he understands what causes the blockage and where it is situated unblocking it will be done. Unblocking sounds easy enough that most people can deal with. Often our plumbers face drains clogged with hair and dirt that require more prominent solutions to be applied, for instance jetting or rodding.