- Steep 3-4 bags of black tea in boiled hot water for 10-15 minutes (the longer its steeped, the more effective!).
- Allow to cool then put into a clean spray bottle.
- Apply your new tea solution to the glass.
- Wipe the mess away.
So, why black tea? In general, tea contains a chemical called tannin: a common, safe and natural chemical found in plants. After steeping the tea, these tannins will act like a bonding agent and grab hold of small particles. When used on glass, this action will help to remove dirt and grime.
While in all teas by nature, tannin most potent in black tea. For example, green tea would still work for you in a pinch, but opt for black tea when you can.