In the corners of plastic windows, where mistakes were made during installation, you can often find accumulations of black mold.
If it is not yet possible to fix the problem at its root, you should use improvised methods to remove fungal colonies.
The simplest, and most importantly, most pleasant way is to use perfume.
It is enough to spray a few drops of perfume and then remove the remaining mold with a dry napkin.
Another option is to use essential oils. Fill a suitable container with 0.5 liters of water and add 10 drops of tea tree essential oil.
All that remains is to move the components and, using an old toothbrush, apply the mixture to the mold-affected areas.
After 10-15 minutes, you can start washing away the dirt with a sponge and a drop of detergent.
For particularly severe cases, the well-known "Whiteness" or another product containing chlorine will do. Apply the product to the areas of the window where mold was found, and after a while, wash off the remains of the gelchlor.