Can I use hydrogen peroxide to clean tile grout and which volume?
I want to remove stained tile grout.
It is grey in colour and I am thinking that hydrogen peroxide can help but don't know what percentage to use?
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https://lifehacker.com/make-a-diy-grout-cleaner-out-of-hydrogen-peroxide-and-b-1788676511
I use a mixture of hydrogen peroxide and baking soda and it works great. Doesn't matter what the amount is as it doesn't really dissolve completely. I use a narrow grout cleaning brush. Even a toothbrush can work, but it will wear out fast. Have fun!
Here's an answer that might help - https://chascrazycreations.com/easy-eco-cleaning-hacks-on-a-budget-for-your-home/