Dark grout warning!! So I will start by saying I have received the most amazingly stellar service from Wayfair! I cannot sing their praises enough! So we bought this tile for our bathroom and after installation we used a charcoal grout. Even after wiping the excess grout within the proper timeframe the grout horribly stained the white tiles. We tried a grout haze remover and a few other things recommended by industry pros. In the end good old fashioned 3:1 ratio of white vinegar and water removed it beautifully! Before I had tried the vinegar I contacted Wayfair to ask if they had any ideas on what to try. Without even asking the placed an entire order for replacement tile! It turns out I didn't need it but I was so impressed they were so fast to provide such an offer! 5 stars all the way!