Your toilet wants you to know this - the only thing that should ever be flushed is toilet paper!
Things that should not be flushed include personal hygiene products, wet wipes, "flushable" wipes, Disinfectant wipes and anything plastic. Teaching your children this information is also a great way to help prevent clogs.
If you are on a septic system, it's particularly important to remember these rules. Clogs can make quite a mess and are easily avoided by flushing only toilet paper.