I'm glad we had a spammer passing through, because this is a thread in need of a bump. The sinks at work are foot-controlled, so I wet my hands, shut off the water while I lather up, then turn on the water to rinse. It's perfect.
Maybe we don't see them in homes because you'd need two feet to control the temperature (unless your foot controlled the flow rate and a hand-operated knob controlled H:C ratio).
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