To Flush or Not to Flush?
Sewer pipes are designed to carry wastewater and dissolved solids. It is likely that the lateral that joins your residence or place of business is only 4 to 6 inches in diameter. It can't handle refuse.
No Refuse
Flushing disposal diapers, items of clothing, dirt, gravel, plants, foodstuffs, or other items that do not quickly dissolve in water will block the sewer lateral leaving your home or business.
No Grease
Grease that is liquid when you pour it into the drain from your frying pan quickly becomes a stiff, sticky, and insoluble lump inside the pipe. Grease should never be flushed or put down sink drains.
Your House Service Lateral - Your Responsibility
The lateral that joins your home or business to the public main is your private property. You will soon experience a blockage, perhaps with sewer water backing up into a basement or stool.
Before you call a plumber, call us.
If you call us, we will check the public main, but in this case, the public main will be "running fine," indicating that the blockage is in your private line.
Call A Plumber
The only remedy is rodding out the service. It can be messy and costly, and is best avoided by not flushing anything but sanitary waste.