Blocked Drains Melbourne is one of the worst kinds of household emergencies. They can cause serious damage to your home if left untreated due to flooding to your home and cause nasty unpleasant smells to waft through your home. Whether it's a basin, sink, or toilet, drains get blocked every day and cause a lot of annoyance Pouring bleach down the sink can handle the problem to some extent, but after a while something has to be done to clean out it.