here are a lot of items in a normal household that can cause blocked drains. One of the most common is human hair, especially in bathroom sinks and bathtubs. Another common cause in the kitchen is grease, oil, and animal fat building up in the drains. Also small toys, soap pieces, food leftovers, sanitary napkins, and anything that can get stuck in the drain can cause a blockage, often to the point where they need the attention of professional drainage plumbers Melbourne. Sometimes tree roots can invade the main drainage lines of a dwelling, which may require heavier plumbing equipment to clear out, and it’s possible that a section of the drain line itself might need to be replaced in the worst cases.​