Baking soda can be used as an effective paint remover on wood and metal surfaces with ease. It is very simple to make the cleaning solution too. Grab a large pot and bring some water to a boil. Tip in ¼ cup of baking soda and add in whatever you want to clean. This is a great method to use for dirty cupboard handles. Allow the solution to boil for 15 minutes, and do not be tempted to stir. Once the time has elapsed, pull the items out of the water. If you notice any paint on them still you can use a toothbrush to scrub this off. Rinse well in clean water and dry.
Flour, water, and washing soda is a great paint remover for larger areas such as walls and flooring. Combine washing soda and water in a large container in equal amounts. Grab a cup measurer and fill it ⅔ of the way full with regular flour. Top up to 1 cup with hot water and mix until a gel is formed. Combine this with the washing soda and apply it to the surface that needs to be cleaned. Allow it to sit on the paint for an hour, periodically misting with cold water. Combine water and white vinegar in equal amounts and use this to wipe off the floury residue.
Washing soda, sodium borate (borax), and ammonia is another effective hack for larger areas. The fumes released by these chemicals can be toxic, so you must create this solution outdoors wearing appropriate safety clothing. Combine all 3 ingredients in equal proportions and add in 8 cups of cold water. Mix well until all of the chemicals have been dissolved and then apply to the paint-stained areas using a paintbrush. Allow it to sit for 30 minutes to an hour. Wipe clean using hot water and a ball of steel wool.