I'm not sure about tile but we use a spot of Coca-cola on carpet spots. The acid it the Coke does a good job on most stains I've tried it on. Hell anything that'd eat the remains of a fly overnight is strong enough. LOL

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As to marriage or celibacy, let a man take which course he will. He will be sure to repent - Socrates

Love is not looking in each other's eyes, but looking together in the same direction - Antoine De Saint-Exupery