Step 3.  Use A handful of baking soda above the impacted area.  Blend a quarter of a cup of three% hydrogen peroxide with a teaspoon of liquid dish washing detergent and drizzle this solution more than the baking soda.  Alternatively, you can use a spray bottle for the hydrogen peroxide https://www.propanraya.com/id/produk/propan-paint-remover-ppr-730