At a minimum, spend an hour with a toothbrush and some bleach and scrub that grout.

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And ever since then, engineers have been kind of been injecting this dam with something called grout.

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Bits of food would sneak into the seams of laminate counters or the grout in tile counters.

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Nothing is more of a turn off than a bathroom where the grout is dirty or moldy or full of soap scum.

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Louisville basketball players have been weighed before and after practice, Grout said, and they can sweat enough to fill their water bottles.

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They replaced the doorknobs, tile, grout, railings and roof as well.

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He explains how in one set of arches, an attempt was made to inject grout into the brickwork to fill voids which the engineers thought must have developed.

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As soon as she walks in a room, she flushes the toilet to make sure it is operational and checks grout lines in the tub and shower for a solid clean seal.

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"You inject the grout under pressure and attempt to fill all the cavities you can find, " said Anthony Randazzo, a former University of Florida geology professor who started the consulting firm Geohazards, which handles about 1, 000 cases a year of sinkholes and other settlement issues.

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The workers were constructing a mining operation underground when they were hit by a high-pressure release of grout, said Bronson Mack of the Southern Nevada Water Authority, a cooperative public agency formed in 1991 to manage the water resources in a region that includes Las Vegas.

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