Sometimes, DIY isn't enough. You should call a licensed plumber if: You smell (sulfur/rotten eggs).
Water is backing up into your bathtub when you run the washing machine. clear blocked drain pipe
This is where amateurs become legends. Feed the tip of the auger into the drain. Crank the handle clockwise. You will feel resistance. Do not force it. Let the snake chew. Crank, pull back an inch, crank again. When you feel the clog—a soft, dense resistance—push through it, then pull back hard. You will extract a foul, rope-like entity that looks like a drowned rat mated with a mop. Bag it. Burn the bag. Run water for five minutes. Sometimes, DIY isn't enough
The P-trap is the U-shaped pipe beneath your sink. It is designed specifically to "trap" debris and prevent sewer gases from entering the home. This is where amateurs become legends