My main toilet was 100% clogged for about 3 days. I tried plunging it, but to no avail. I let the water in the bowl sit for a whole day and it didn't drain a single inch. I went to the store to buy Drano, but the back of the bottle says that it's not for use in toilets. The problem with using Drano in toilets is that the Drano can't get to the clog due to the trap design; I knew that if I could find a way to deliver the Drano to the clog, I'd be home free.
What to do? I thought of 3 options:
1. Pour in lots of Drano. If I could fill the bowl with Drano it would overflow into the trap below. This would probably take quite a bit of Drano, and I only bought one bottle.
2. Use a length of rubber hose to get the Drano through the trap. By pushing the hose down into the drain of the toilet and through the trap, I would be able to then pour the Drano down directly into the pipes. I expect that this would have worked quite handily, but I didn't have a suitable hose.
3. Apply the one bottle of Drano that I already had, and then plunge it down to the clog. I knew this would be the easiest method, but also the most dangerous. Drano's active ingredient is sodium hydroxide and it has a pH of around 13; if you've got enough to fill a bathtub, you can dissolve a whole human body in a few hours and it'll go right down the drain.
I decided to go with option 3. Normally when you plunge a toilet you want to try to pull the clog towards you (i.e., you use more force pulling the plunger up than pushing it down), but since I wanted to move the Drano to the trap I did the opposite. Insert Drano; plunge plunge plunge. Within a few minutes, the drain was clear! Huzzah!
As an added bonus, my toilet was incredibly clean from all the Drano sloshing around inside. In the future, I may use Drano to clean all my hard surfaces.