Greetings everyone, The orange seen in the spots on the tile in the photo is a stain apearing in the holes that have grout and the grout lines. it's in a bathroom. I've only had this show up in the bathrooms of some vacation condo's I service. I was thinking it might be aresol sunblock. I thought I cleaned it with MEK but it soon came back  Has anyone seen this before and had sucess cleaning it. Thank you
Stephen
 
 
 
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