Soot can safely be washed off cars.
Chessum argued: "Chalk can be washed off- that is the whole point of chalk.
They can be washed off with warm water, a tiny bit of washing-up liquid and a cloth.
In the eighties, salmonella, which had previously been found on the surfaces of eggshells, and could be washed off, began to appear on the inside.
Appalled, the commissioner ordered that the words be washed off, before they could even be photographed, thus destroying one of the most important clues the Ripper ever left.
It was hard to muster shock at NPR's report this morning that the purple ink meant to identify people who had voted could be washed off easily.
If a product is known to have deposited particles, they can be washed off, or a contaminated box could be opened by someone wearing gloves and thrown away.
While the jam (strawberry for the curious among you) can be washed off, we're not so sure Lee is going to have the same luck with his tattoo.
Each peeled off under my fingertips (a common problem with silicone-heavy products), or left unblended track marks around the nose and chin that had to be washed off in order to start again.
The seed coats of some species contain a growth inhibitor that can be washed off only by a copious quantity of water, thus preventing germination after only a brief shower.
There's still some fruit pulp stuck to it that has to ferment before it has broken down enough to be able to be washed off before the coffee beans are dried.
