Phase 3.  Implement A Few baking soda above the affected space.  Mix a quarter of the cup of 3% hydrogen peroxide by using a teaspoon of liquid dish washing detergent and drizzle this Option about the baking soda.  Alternatively, You may use a spray bottle for your hydrogen peroxide solution. https://www.propanraya.com/id/produk/propan-paint-remover-ppr-730