I'd say a gallon or so should do it. But you really need to address what's causing the odor to begin with...is it food scraps? Or just dirty water getting dumped down the drain? Slow draining pipes? Modern Plumbing/pipes are supposed to be "vented" to vent out odors through the roof of the building...I'm guessing this isn't the case for this scenario? Otherwise, I'd say try 1 cup Baking Soda, 1 Cup Vinegar; let it sit in the drain for 30mins to 1 hr, then flush a tea kettle full of boiling water down the drain. That should kill any bacteria down there causing the odor :)
The drain from the washer to the main line is getting plugged and the floor drain is easier. Drain cleaner in the floor drain should take care of it.
To prevent water from coming up from the basement floor drain, you can install a backwater valve. This valve allows water to flow out of the drain but prevents it from backing up into your basement. Regular maintenance and keeping the drain clear of debris can also help prevent water backup.
A floor drain , drains water and other liquids that spilled on the floor
To ensure proper drainage in your basement by installing a floor drain, you should first locate the lowest point in the basement floor where water tends to accumulate. Then, hire a professional plumber to install a floor drain at that location. The floor drain should be connected to a drainage system that leads to a sump pump or a sewer line to effectively remove excess water and prevent flooding. Regular maintenance and cleaning of the floor drain are also important to ensure it functions properly.
I would say that if water had never backed up in your floor drain, then backed up even after you had the drain line snaked, Roto-Rooter didn't do their job. Once a drain line is cleaned, it should drain like it did before the stoppage. As for plugging the floor drain, it is there for a reason, I would not plug it. There are several items manufactured that will allow a floor drain to drain but if the line starts stopping up they will seal the drain off to prevent water from coming out of the drain.
When you have a spa used by the public you want to drain it often. The water in the spa should always be clear and clean.
The AC condensation drain is plugged causing the water to back up and leak onto the front passenger side floor.
Yes, be sure to pipe floor drain line properly into water closet piping.
If drainage is plugged under the grille adjacent to windshieldwipers, the water will drain into the floor of the front passenger seating area. Remove the grille and clear the plug. To avoid recurrence of this problem, clear leaves and other materials laying on the grille. Mike
There should be a drain valve on the boiler. Drain it to the desired water level there.
stoppage / broken water line /under ground seepage
Water collects on the interior floor when the air conditioner is used # Air conditioner evaporator drain hose is blocked. Clear the drain hose where it exits the passenger compartment. # Air conditioner evaporator drain hose is disconnected. Secure the drain hose to the evaporator drainage tray under the dashboard.