Important Safety Note: Never pour chemical drain cleaners into a toilet before snaking. The snake can splash hazardous chemicals back at you.
A clogged toilet is a common household frustration. While a plunger solves many simple blockages, stubborn clogs deeper in the trap or drain line often require a (a specialized drain snake for toilets). Using a standard flat drain snake can scratch porcelain, so a rubber-sleeved toilet auger is highly recommended.