Application:
Spray water on the substrate; scoop the filler grout with water, apply in a consistent pattern, scrape off the extra constituents and leave it to settle down.
Mixing Ratio:
The tile joint filler has no mixing ratio apart from adding the adequate amounts of water to make the mixture steady and stable.
Care & Maintenance:
Cleaning with baking soda or a solution of water and hydrogen peroxide can keep the yellowing and stains away. The care can be as simple as cleaning with a damp cloth or sponge.