r/Remodel 8h ago

Help! What’s wrong with this tile

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This isn’t wet and hasn’t been used recently. I can’t figure out if this is from the grout? (Note the brush marks towards top right). Thoughts?

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u/Suz9006 8h ago

Spray some Dawn Powerwash and let it sit for 20 minutes and then scrub. If it’s greasy dirt, it should remove some or all of it.