
In a damp area like a shower, there’s no
permanent cure for mildew growing on
grout. But bleach, along with light
scrubbing, is a good way to clean it off
and kill it off—at least temporarily. The
trouble with applying bleach to a large
area is that nasty fumes fill the air. Plus
you risk damage to other nearby surfaces
(bleach can harm many metals
and plastics with prolonged contact). A
bleach pen, on the other hand, lets you
apply bleach only where you need it.
And since the bleach is in a gel form, it
grips vertical surfaces—that gives it
time to penetrate and kill mildew in the
grout’s pores. You’ll find bleach pens
($4) alongside fabric detergents at discount
and grocery stores. If you have
colored grout, test for discoloration on
a small spot.




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