If you have tried the plunger and the auger and the toilet remains clogged, the blockage may be deep in your main sewer line. In this case, it is time to call a licensed plumber.

This classic combo creates a fizzing reaction that helps lift stuck-on residue. Pour one cup of baking soda into the bowl followed by two cups of white vinegar. Let it sit for at least 30 minutes before scrubbing with a stiff-bristled toilet brush.

Here are the most effective methods, ranging from gentle to heavy-duty.