1. Safety: Put on your protective rubber gloves and a mask, and ensure you are working exclusively in a well-ventilated room before opening any household chemicals.

2. Pour: Measure 1 cup of baking soda and pour it directly into the bottom of a clean, empty 1-gallon plastic jug.

3. Combine: Add 1 cup of ammonia, 1/2 cup of vinegar, and enough warm water to fill the container exactly until halfway full.

4. Agitate: Swish the plastic jug gently back and forth to dissolve the baking soda powder and blend the liquid ingredients completely.

5. Fill: Pour the remaining warm water into the container until it reaches the very top, then seal the jug tightly with a secure lid.

6. Label: Mark the outside of the container clearly with a marker for home safety, and store it completely out of reach of children and pets.

7. Transfer: Pour a small portion of the liquid solution into a smaller pump spray bottle for easy handling on daily household tasks.

8. Spray: Mist the cleaner directly onto your dirty tiles and wipe the grime away cleanly using a fresh damp sponge.

9. Thicken: Mix 2 tablespoons of extra baking soda with 1 tablespoon of your freshly made liquid cleaner in a small bowl to create an extra-strength paste for highly soiled areas.

10. Brush: Rub the thick paste directly onto tough grout stains using an old toothbrush, let it sit undisturbed for 5 minutes, then scrub it off and rinse cleanly.

11. Warning: Use this formula with caution and NEVER mix it with any commercial products containing bleach, as combining ammonia and bleach creates highly dangerous, toxic fumes.