If vinegar doesn't effectively remove hardened water spots from glasses and other drinking vessels, you can try the following alternative methods:
Lemon juice: Squeeze fresh lemon juice onto the water spots or soak the glasses in a mixture of lemon juice and water for a few minutes. The natural acidity of lemon juice can help dissolve the mineral deposits. Scrub gently with a soft cloth or sponge, then rinse and dry.
Baking soda paste: Make a paste by mixing baking soda with a small amount of water. Apply the paste to the water spots and let it sit for a few minutes. Then, scrub the glasses with a soft cloth or sponge in a circular motion. Rinse thoroughly and dry.
White vinegar and baking soda: Create a mixture by combining equal parts white vinegar and baking soda to form a paste. Apply the paste to the water spots and let it sit for a few minutes. Scrub gently with a soft cloth or sponge, then rinse and dry.
Toothpaste: Non-gel toothpaste can be effective in removing water spots. Apply a small amount of toothpaste to a soft cloth or sponge and gently scrub the affected areas. Rinse thoroughly and dry.
Commercial lime scale remover: If all else fails, you can try using a commercial lime scale remover specifically designed for cleaning glassware. Follow the instructions provided on the product and take any necessary safety precautions.
Remember to rinse the glasses thoroughly after using any of these methods and dry them properly to prevent further water spots or streaks from forming. It's also a good idea to tackle the issue as soon as possible before the water spots become more difficult to remove.