The flush handle is pressed, lifting the flapper, setting in motion about 10 seconds of flushing genius. The lifted flapper releases tank water into the bowl via rim jets and the larger siphon jet.

The gravity flush toilet - which you probably have sitting in your bathroom right now - has a long history that goes back ...

Most of the stains and grime in your toilet bowl are readily visible when you open the lid and look inside. However, there could be some stains and buildup that are barely visible in the siphon jet of ...