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Not bad for someone once terrified of water in case a shark came up the plughole.

The gel often slid straight down the plughole anyway.

“Why, only last week your own horrible Aunt Sponge flushed my poor dear father down the plughole in the bathtub.”

Its latest research reveals that a fifth of consumers confess to pouring fat and grease down the plughole, with those aged 18-34 most likely to do so.

"We've taken steps to make it even harder to get to the plughole but clearly, this is not something that any member of the public should do".