Unless you have a way to THROUGHLY rinse this you will end up with a white film of baking soda. Depending on how dark your grout is it will really show. Owned a clawing company 32 years and got called in to clean up the mess this causes. Stick with things that require no rinsing. Baking soda will show if left behind. All powdered products go back to powder once all the water is gone.
This. I have done this before and spent hours trying to get the baking soda off. It leaves a film that just keeps coming back, no matter how many times you try to mop it up.
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I made a paste of Hydrogen Peroxide and Baking Soda. Let it sit for 10 minutes on my yellow stained linoleum. Scrubbed with hot water and a little bit of Dawn dish detergent. The stain was not removed. It didn't even get lighter. So this did not work for me. My mom used to have a dog who would pee on the training pad. Sometimes the dog missed and so the pee stained the linoleum.
Would this brighten the dirty dark grout too? grout on my floor is dirty dark color from the hurricane surge water that came in.and left my grout looking disgusting