Old milk bottles can be used as decorative pieces or sold at auction. Depending on where the old milk bottles have been stored throughout the years, however, they could be filled with quite a bit of dirt, dust and grime. It's important to know the proper way to clean your old milk bottles as you don't want to damage the items. It's not hard to safely clean your old milk bottles and get them looking as good as new.
Begin by thoroughly rinsing out the old milk bottles with hot water. Fill the bottles with water and then swirl the water around inside of the bottle to remove the dirt and dust.
Fill your sink with hot water. Add roughly 1 to 2 cups of white vinegar to the water. How much water you add will be dependent on how many bottles you're cleaning and how dirty they are.
Let the milk bottles soak in the solution for about an hour.
Scrub the inside and outside of the old milk bottles with a used toothbrush. The glass should be thick enough that you can scrub with a good amount of pressure without having to worry about cracking the bottles.