1. How to deal with excessively dirty gaps in wood brick seams?
If the gaps in wood brick tiles are too dirty, you can clean them with a solution of baking soda and water. If the dirt is severe, you will need to use a bleaching agent.
First, apply the cleaning agent directly to the joints of the wood brick tiles. Then, use an old toothbrush to gently scrub the joints, removing the dirt and debris. After cleaning each joint thoroughly, rinse the surface of the wood brick tiles with water and wipe away any remaining water with a dry cloth.

Two. How to clean black grout lines in wood brick tiles.
1、Toothpaste
Apply toothpaste to the gaps that need cleaning, then use a discarded toothbrush to scrub the surface of the gaps. This method can effectively remove dirt and debris.
2、Lemon juice + baking soda + white vinegar + water
Mix lemon juice, baking soda, white vinegar, and water in the appropriate proportions and stir until well combined. Then, use a brush to apply the mixture to the joints, scrubbing with moderate pressure. After scrubbing, wipe clean with a clean cloth to remove dirt and mildew.
Three. How to deal with white powder in the gaps of wood brick tiles?
The white powder in the wood brick joints indicates efflorescence. once efflorescence occurs, it can be neutralized with acidic substances to reduce alkalinity. Cleaning the joints with a weak acidic liquid can prevent this from happening.