Doesn’t using soap or the garbage disposal take care of FOG?
FOG does not mix with water, and detergents used to “wash it down the drain” typically separate from the FOG after a period of time, which means that it ends up clinging to the pipes, restricting the flow of wastewater. The garbage disposal just chops up the bits of food you put into it, basically moving the problem downstream. The bottom line is that using soap or the disposal is not the solution to reducing FOG.