Least Toxic Method

• 1). Fill an empty spray bottle with hot water. Add 1 tbsp. liquid dish soap to the bottle and shake it up to combine the ingredients.
  
  
• 2). Apply a generous amount of the spray to the paint on the windows. Allow it to sit on the window for about five minutes.
  
  
• 3). Use a plastic scraper to peel the paint from the windows. If the paint does not come off with the plastic scraper, use a razor blade held at a 30 to 45 degree angle to gently pry the paint from the glass. Use caution so as not to scratch the glass.
  
  
• 4). Use vinegar if the soapy water did not remove the paint. Heat 1 cup white vinegar in a pot on the stove over medium heat. Leave the vinegar on the flame for about five minutes, or until it is hot. Use a funnel to transfer the vinegar to an empty spray bottle. Saturate the paint spots with the vinegar. Scrape off the paint with the razor blade or plastic scraper.
  
  

More Toxic Method

• 1). Fill a small container with acetone. You can buy acetone at most home improvement or hardware stores.
  
  
• 2). Dip a cotton ball into the bowl of acetone. Dab the acetone onto the paint using the cotton ball.
  
  
• 3). Allow the acetone to sit on the glass for about five minutes. Hold a razor blade at a 30 to 45 degree angle and gently scrape the paint off of the windows. Apply more acetone as needed until all of the paint is gone.
  
  
• 4). Use mineral spirits in the same manner if the acetone did not remove all of the paint. Repeat the process, if necessary, until all of the paint has been removed.
  
  

Most Toxic Method

• 1). Mix equal parts isopropyl alcohol and turpentine into a small container. Stir the ingredients with a spoon to combine.
  
  
• 2). Dip a cotton ball into the ball to absorb a generous amount of the solution. Sponge the solution onto the paint spots.
  
  
• 3). Use a razor blade held at a 30 to 45 degree angle to gently scrape the old paint from the glass. Add more of the alcohol and turpentine solution, if necessary, until all of the paint has been removed.
  
  
• 4). Rub a stick of chalk over the affected area. This will remove any last traces of the paint and help to polish that area of the window glass. Press gently when rubbing the chalk so as not to damage the window glass.