If you have a sewage backup, the first thing you should do is call a professional to help you clean it up. Sewage backups can be very dangerous and can cause a lot of damage to your home, so it’s important to get rid of it as soon as possible.
There are a few things you can do to prevent sewage backups from happening in the first place. First, make sure that you have a good sewage system in your home. Second, don’t flush anything down the toilet that doesn’t belong there. Third, don’t pour any grease down the drain.
If you do have a sewage backup, there are a few things you can do to clean it up. First, you need to remove all of the water from the affected area. Second, you need to disinfect the area. Third, you need to repair any damage that was done to your home.
https://www.angieslist.com/articles/what-do-when-your-home-affected-sewage-backup.htm
https://www.thespruce.com/sewage-backup-in-your-home-2911191
https://www.bobvila.com/articles/sewage-backup/