Avelina/Shutterstock You might think that a crushed up eggshell will go down the drain smoothly, but it actually is causing blockage. The sharp, hard edges of the shell will collect other things coming down your drain and eventually cause a clog. These are the 25 things your plumber won’t tell you.
olavs/Shutterstock When you pour grease down the drain it sticks to the inside of your pipes and the pipes in the street. This can cause the entire pipe to become clogged over time. Other oil-based products are also dangerous to pour down your drain, such as cooking oil, salad dressings, butter, mayonnaise, and fat. If needed, make sure to let the grease cool first, then dispose of it in the trash instead.