Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to maintain a clean toilet [title] Add toilet cleaner or other household cleaner to the inside of the bowl and beneath the rim then allow it to work for a few minutes. [step] There are many products available that cling to the sides of the bowl rather than running quickly down. [substeps] Using a toilet brush, scrub the interior bowl until clean.

Ending1: Soap should not be added, as even a mild soap may allow it to be rinsed properly at this stage. [title] Remove old or dingy toilet seats by spraying the seat with a toilet solution such as wpa, sort of spray, etc. Ending2: Wetting the sides is not necessary, as as toilet water is easily absorbed into the pipe. [title] Use more toilet cleaner if the toilet doesn't flush after a while. Ending3: The inside surface of the bowl should be safe to use as long as you do not use any products or residue on the outside surface of the bowl. This scraping should eventually happen naturally, but it may take several sessions. Ending4: [title] Sprinkle baking soda all around the sides of the inner bowl for a more natural, non-chemical clean. [step] Allow it to work for approximately 5 minutes then scrub with a toilet brush.

Answer format: ending1/ending2/ending3/ending4