Byrne suggests pouring some dishwashing soap into the toilet to get the clog loosened up. You'll need to pour about half a cup into a half-filled toilet and allow it to sit for 10 to 20 minutes ...
While a plunger won't always fix a draining issue, it's the first thing you should grab to clear the clog. Plunging properly ...
Alternatively, before calling a professional plumber, you could also try using shampoo to unclog your toilet. The shampoo, or ...