Grubby grout can make even the plushest of kitchens look unclean, and while you may be tempted to reach for the vinegar or bleach, there’s a common kitchen ingredient that does the job just as effectively – and it won’t wreck your sealantGrubby grout can make even the plushest of kitchens look unclean, and while you may be tempted to reach for the vinegar or bleach, there’s a common kitchen ingredient that does the job just as effectively – and it won’t wreck your sealant