The mildew/mold between the bath tiles didn't really come off based on their instructions by wiping or rinsing with the shower after spraying & waiting 15min-30mins. We had to use a toothbrush & scrub those areas before 75% of the mildew would loosen up & then rinsing with the shower afterwards. After the tiles dried, there were still some mildew/mold that didn't come off so re-did those areas again but not much changed esp the dark moldy spots. After just 2 uses of mainly spraying targeted areas of the bath tiles, we only have 1/4-1/3 of a bottle left so it isn't really worth the price of $5.99 since it's watery & doesn't foam up & it isn't as effective nor as easy as I had hope. The main thing that is better than the US cleaning products is that it doesn't really have any smell.