Lobster typed

Plastic washing up bowls scratch the sink

?? more than all the metal washing-up bouncing round in the bottom of
the sink?

David

It's not the plastic itself. If, for example, you wash muddy spuds in a
plastic bowl and then wash out the bowl, soil and grit will line the
sink and get ground into the sink surface when the washing-up bowl is
next filled.

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Helen D. Vecht:
Edgware.