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Specker works like how woodpecker picks insects
from tree trucks. It is not the sponge that you can
not use to clean the bottom of your orange juice
glasses or your tall skinny vase. Like woodpecker,
its long tongue extends deep into the tree trunks
to reach hidden insects. Specker is a sponge that
extends when you stick your utensils at the
specially cut slit. Now you can clean those places
your hand cannot reach due to narrow brim or the
surface too disgusting to touch.
National University of Singapore