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The second method is to use baking soda. This natural ingredient is well known for its degreasing properties and mild abrasiveness. So, in anticipation of rain, wet your balcony or terrace and sprinkle the floor generously with baking soda.
For an even more effective degreasing effect, you can also add salt. Then scrub with a brush to remove all traces of dirt.
Finally, wait for the rain to finish your work.
The rain will rinse everything off naturally, ensuring not only optimal cleaning but also considerable water savings.
If you still notice baking soda residue after rain, rinse with a mixture of water and vinegar.
