To clear a clogged kitchen sinks disposal, first check its drainage. If it is flowing normally, the clog is probably in the water line. If not, you can add baking soda to the disposal to loosen it. Repeat the process several times until you've solved the problem. If this doesn't work, you can always use boiling water to unclog the disposal. Alternatively, you can also use a funnel filled with baking soda and pour it down the drain.