We talk a lot about how to clear out clogs, but what about preventing them entirely? When it comes to sewer cleaning, prevention is a great method. One of the biggest causes of sewer blockages actually comes from kitchen-sink grease. After you’re done cooking, dispose of your grease in the garbage rather than the sink. Even if it’s in liquid form, grease will harden in your pipes and build up over time, causing a clog. At the same time, be careful of what you put in your garbage disposal – the larger the item, the more likely it is to cause blockages in your pipes.