I would agree with those of you who say that the manufacturers should maybe be more receptive to the needs of the crew wrt galley waste design, maybe even routing the waste to onboard tanks as for the toilet waste. Indeed that would solve the problem of contaminating antennae on the underside. [Note: not many other places to put antenna that need to point down at the grouns in order to work!]
But to those of you who, despite being well aware of company requirements, continue to pour prohibited things into the sinks, shame on you, you should be forced to work with an engineer to rectify your sins and then you'd maybe stop.