Mildew on grout in shower
I've had a horrible problem with mildew on the grout in my shower for the past few months. I can clean it and the mildew is back in a day or so. We've been in this house (new) for less than two years and it didn't start happening until a few months ago. Any ideas about why it would be happening now? How often does grout need to be sealed? Could that be the problem?