If the windows are made of wood ..
As for the wooden windows, you need to be more accurate with them. It is extremely not recommended to treat them with alcohol -containing and acid -containing solutions. Firstly, they easily corrode paint, and secondly, their effects will negatively affect the structure of the surface. With a guarantee of one hundred percent, it can be argued that the regular effects of alcohol or acid after several years will turn the windows into a rotten frame that will fall out sooner or later.
