Why does the wax seal keep breaking on your toilet?

A wax seal can break on a toilet due to several factors, including improper installation, age, or excessive movement of the toilet. If the toilet is not securely bolted to the floor, it may rock, causing the wax seal to crack. Additionally, if the seal has been exposed to moisture or is old, it can degrade and lose its effectiveness. Regular maintenance and ensuring a proper fit during installation can help prevent this issue.