You can do a few things this fall to avoid a mess this winter.
If you live in a home built in the seventies or earlier you may want to consider having the main sewer line for your home cleaned. These homes tend to have metallic or clay sewer pipes which allow tree roots to grow inside them. These roots don’t necessarily mean the pipe is broken as they find their way thru the joints in the pipe and catch things causing a backup.
Avoid the mess and the possible damage. Have the line cleaned when it is convenient for you instead of a surprise at the worst time.